Prognostic Factors of Functional Recovery from Left Hemispheric Stroke.
The role of lateralization in the functional outcome of the brain from stroke is not well established. Studies are limited on how the side of the brain on which the lesion appears affects the rate and amount of stroke recovery. Hemispheric lesion may demonstrate differences in some cortical functions, as an individual with left-sided hemispheric stroke (LHS) usually has impaired language comprehension and expression [1-4]. Hemispatial or unilateral neglect, which is characterized by reduced attention or spatial awareness of the body and environment on the hemiplegic side, occurs more often and seriously with a right-sided hemispheric stroke (RHS) [1, 5]. Despite unilateral neglect and aphasia being the most common consequences of neuropsychological deficit after stroke , their roles in predicting functional outcome are still inconclusive and have not been reported adequately. Limited studies more likely reveal the relationship of unilateral neglect on functional outcome than a left-sided lesion with aphasic problems [5, 7, 8]. Few studies have reported the functional outcome from side of hemisphere involvement, and they have been inconclusive [1, 3, 5, 6, 9-11]. Differences in the results may be related to heterogeneity of the population, methods, timing of measurements, and variable outcomes [9, 12]. Some studies found that stroke patients with a right-sided hemispheric lesion had a poorer outcome than those with a left-sided one [13-16], whereas others found that those with a left-sided lesion had a poorer outcome [1,12].
A large prospective acute stroke trial  found that hemispheric lateralization was not an independent predictor of functional outcome, as measured by the modified Rankin Scale and NIHSS score. Fink et al.  and Woo et al. previously  found that if NIHSS is used as a functional outcome, perhaps the NIHSS score is biased in itself. A greater score indicated that severe impairment tended to relate to comprehension deficit of individuals with LHS, that is, language, speech, dysphagia, and facial palsy, rather than impairment following an RHS, that is, inattention. Roles of lateralization on functional recovery are still of interest for rehabilitation professionals, especially in some developing countries with limited resources. Therefore, identifying the key predictor of the optimum functional outcome is essential, since strategic plans could be guided for the rehabilitation decision during the subacute period, for example, as to which patients are suitable for supported home discharge planning. The aim of this study was to explore possible prognostic variables of functional recovery in stroke patients with left-sided hemispheric involvement, which presumably is the dominant side, during 6 months of follow-up.
A single dataset of ischemic strokes was obtained from the Stroke Unit of the Tertiary University Hospital, Chiang Mai University, Thailand, between January 2010 and March 2015. The inclusion criteria of this study were (1) adults aged above 18 years and diagnosed as having had their first-ever ischemic stroke, (2) no previous disability, and (3) availability of well-documented neurological records at admission and a six-month follow-up.
2.1. Clinical Variables and Measurement of Outcome. A retrospective review of medical records, including baseline characteristics, stroke risk factors, comorbidity, and related stroke variables such as motor assessment, stroke consequences, and problems and complications from other causes that might affect recovery, were recorded during hospitalization. All of the stroke-related variables were assessed in the first week after stroke and during six months after onset period. Motor performance of upper and lower extremities was assessed by manual muscle testing. Perceptual deficit was assessed by observing patient responses. The deficits were defined as patients failing to respond to stimuli provoked on the hemiplegic side or being unable to perceive their body parts via a conventional standardized subtest (i.e., the line bisection test or copy drawing test) . Apraxia is the inability to perform skilled and purposeful motor tasks despite having the physical ability to do. This phenomenon was assessed by observing patient behavior such as inability to perform purposeful movements, errors when asked to demonstrate how to use an object or common instruments, and problems imitating abstract and symbolic gestures (e.g., wave goodbye and salute like a soldier) . Speech and communication impairment were assessed by difficulty in fluency, comprehension, and repetition. Reassessment of these variables was revised at follow-up within six months after onset. The outcomes in this study were the ability to walk and functional recovery assessed by a modified Rankin Scale (mRS), which indicated improvement during 6 months of follow-up. "Walking capacity" referred to the ability to walk on a level surface for at least 10 meters and allowing the use of a gait aid or orthotic device, and "functional recovery" was defined according to a mRS score of 1 (no significant disability) to 3 (moderate disability: requiring some help but able to walk without assistance). The mRS is a clinician-reported measure of global disability which has been applied widely for evaluating recovery from stroke, particularly regarding physical disability and the need for assistance. It was reported as having a strong relationship with other clinical measurements of stroke severity and sensitivity in order to identify mild and moderate disability in acute stroke management . Clinical variables and outcomes were assessed by certified physicians, and all recordings were approved and countersigned by expert academic physicians. The Ethics Committee of the Faculty of Medicine, Chiang Mai University, Thailand, approved the study protocol on 24 July 2015 (Research ID: NONE 2558-03123).
2.2. Statistical Analysis. Baseline characteristics, stroke risk factors, motor assessment, and complications during hospitalization were compared between patients with LHS and RHS. Fisher's exact test was used for categorical variables and Student's i-test performed for normally distributed continuous variables, with a significance level of p < 0.05. Univariable analysis of clinical variables was performed, with dependent variables being the outcomes of walking capacity and functional recovery, and all independent variables, having a dichotomous scale (0 = no; 1 = yes), were clinically meaningful variables. There was no confounding variable in this prognostic study design. Statistically significant variables (p < 0.01) from the univariable analysis were submitted to the multivariable analysis model. The step-backward method of multivariable risk regression analysis was used, with the generalized linear model, in order to derive the final independent predictive variables that were shown as the risk ratio (RR) and 95% confident interval (CI), in which p < 0.05 indicated statistical significance. All statistical analyses were performed utilizing STATA version 12 Software.
Of the 350 ischemic stroke patients who met the inclusion criteria, 167 were individuals with LHS and 183 had RHS. There was no significant difference in the distribution frequency of ischemic type between the two groups (p = 0.58). The main etiology of a large vascular lesion was atherosclerosis on either the left side (72.46%) or right side (71.58%). Table 1 demonstrates no significant difference in the distribution of baseline demographics (i.e., age, gender, ischemic stroke subtype, and blood pressure on admission) or clinical data (i.e., prior transient ischemic attack (TIA), health status, and comorbidity prior to stroke) among individuals with LHS and RHS, except for the initial Glasgow Coma Score (GCS) and diabetes mellitus (DM), in which a left-sided hemispheric lesion showed a significantly lower GCS and greater number of DM cases than the right-sided one (p < 0.05, Fisher's exact test). The proportion of patients who achieved walking and functional (mRS score of 1-3) recovery (Figure 1) was not statistically different between those with left- or right-sided hemispheric lesions. A proportion of 62 and 66 percent of individuals with LHS and RHS, respectively, could walk independently on a level surface at 6 months' follow-up.
Regarding functional outcome, 74 and 69 percent of individuals with LHS and RHS, respectively, accounted for functional recovery (mRS score 1-3). No significant difference between the two groups was found in either walking or functional recovery (p > 0.05, Fisher's exact test). Table 2 demonstrates and compares the motor ability and poststroke complications between individuals with LHS and RHS. Motor performance of the hemiparetic arm and leg was not significantly different between the two groups, as measured by manual muscle testing (MMT). Almost all poststroke related complications showed no significance between the two groups except for communication and perception problems. LHS patients had the greater number of communication problems with 23.1% and 27.8% having motor or sensory aphasia and global aphasia, respectively. 3.2% and 4.3% of right-sided hemispheric stroke patients had motor or sensory aphasia and global aphasia (p < 0.001), respectively. Nevertheless, the individuals with LHS had more perceptual disturbance and inattention (unilateral neglect) than those with RHS (17.3 versus 4.05%, p < 0.001).
3.1. Prognostic Factors for the Postacute Stage after Stroke. This study focused on prognostic variables of the left hemisphere, which was assumed to be the dominant side of the brain. Univariable analysis of prognostic factors related to functional and walking recovery as shown in Table 3. Aphasia and motor function of the hemiparetic arm and leg were found to be associated strongly with either functional or walking capacity during 6 months' follow-up (p < 0.01). Despite inattention being found commonly with a right-sided hemispheric lesion, a left-sided one was found to relate with functional recovery. Poststroke complications were related to walking ability. Nevertheless, the final stepwise multivariate model demonstrated that only motor function of the leg was the strongest independent predictor for both functional and walking recovery in this setting, with a risk ratio (RR) of 2.41, 95% confidence interval [CI] of 1.61-3.60, and p < 0.001 and RR of 1.83, 95% CI of 1.03-3.26, and p = 0.04, respectively (Table 4).
4.1. Functional Outcome between Left- and Right-Sided Lesions. This study found an insignificant trend in the proportion of patients who achieved a clinical outcome in either functional recovery (mRS score of 1-3) or walking capacity between left- and right-sided lesions, despite them being well matched for demographic data and major variables associated with the outcome (Table 1). However, GCS on admissions with a left-sided lesion had a significantly lower score than those with a right-sided one (p < 0.001), which was similar to a previous study .
Evidence predicting stroke outcome by side of hemisphere is still inconclusive from previous studies. Considering terms of anatomical and hemodynamic aspects, left-sided hemispheric infarction, both atherosclerotic and cardioembolic stroke with underlying hypertension, has been revealed as being more frequent and more severe and having worse outcome than right-sided hemispheric infarction [10, 19]. This could be due to higher intima-media thickness and mean flow velocity of circulation in the left carotid artery, which reflects greater hemodynamic stress in the left cerebrovascular system and finally enhances atherogenesis, as evidenced from hemodynamic study . Left-sided hemispheric stroke tended to have poorer outcomes, due to a higher incidence of large left-sided hemispheric vessels and middle cerebral artery distribution . In contrast, Goto et al.  found that, in most cases of middle cerebral artery, locomotion outcome in right-sided hemispheric infarction was poorer than that in a left-sided lesion, except in a case of large infarction.
4.2. Independent Predictors of Functional Outcome in LHS. The results from this study demonstrated the effect of exposure on the outcome of interest by using the step-backward method of multivariable risk regression model, risk ratio (RR). This finding revealed that the functional outcome in LHS was not affected by side of brain involvement but only by motor function of the leg, which was the strongest independent predictor for both functional recovery and walking recovery. Univariable analysis demonstrated that aphasia, inattention, and motor function of the arm and leg were associated in the subacute period with walking ability, while aphasia, medical complications, and motor function of the arm and leg were associated with functional recovery. Nevertheless, by recruiting all significant variables from univariable analysis, motor function of the leg was the only independent factor in either walking recovery or functional recovery in the final stepwise multivariate model.
The communication problem, aphasia, is a major consequence of a left-sided hemispheric lesion [1, 2]. With the current use of high gamma electrocorticography, the inferior frontal gyrus of the dominant left hemisphere is demonstrated as being one of the most important brain regions for language processing . Aphasia and dysarthria have been reported as independent factors associated with functional status , increased length of hospital stay, and complications during acute stroke admission [20, 21]. Poststroke survivors with aphasia demonstrated negative impact on health-related quality of life (HRQoL) in a systematic review, with emotional distress and limited social relationships , increased rate of mortality , and poor gait quality . In recent studies, Kim reported that aphasia and dysarthria affect the recovery of activities in daily living, quality of life, cognitive function, motor power, and ambulation status . Laska et al.  demonstrated retrospectively from the Virtual International Stroke Trials Archive that aphasia at baseline and at 3 months and persistent dysarthria at 3 months were associated significantly with a poorly modified Rankin Scale in a large cohort (n = 8,904). In this study, aphasia was found to relate negatively to the outcomes in univariable analysis but not in the final model of multivariate analysis. Although aphasia is thought to be a negative factor in outcomes, the findings of this study, and a previous one by these authors , indicate that only motor function was the most predictive factor of functional outcomes in either ambulation (RR, 2.41; 95% CI: 1.61-3.60) or overall functional ability (RR, 1.83; 95% CI: 1.03-3.26) when adjusting for other possible prognostic variables in a multivariate analysis. A systematic review  and recent article in 2015  confirmed that the initial grade of paresis was the most important predictor with respect to early prognosis of motor recovery. The greatest overall improvement in motor functions was evidenced within the first month after stroke, with some degree of motor recovery continuing for up to 6 months, especially in groups of initially severe patients . These findings supported the importance of rehabilitative training strategies toward improving motor performance in the sub-acute period and referral to appropriate local community resources in order to enhance the mechanism of recovery after stroke [28-30].
4.3. Limitations. The small number of subjects was a limitation of this study which could not stratify data according to subtypes of ischemic stroke, which might affect the outcome; that is, lacunar infarct and a small vessel occlusion should reach a better outcome than main territory infarct [11, 14]. In addition, the retrospective nature of this study omitted some possible clinical variables in the regression analysis. Other variables from a multidimensional perspective such as background of the patients prior to stroke, that is, level of fitness, side preference or related factors after stroke, motivation, attitude, and compliance to the rehabilitation training program, might have contributed to the outcome but could not be included as variables in this analysis. These aspects may have limited interpretation ability, and a larger, prospective study is needed for verification.
This study demonstrated that motor function of the leg was the strongest independent predictor of walking and functional ability in left-sided ischemic stroke patients. Findings from this study indicate that the determinants of functional outcome maybe actual impairments rather than hemispheric involvement. Although this study might not shed new light on predicting functional recovery in the stroke population, its research methodology could be conducted practically on a routine basis and transferred into established guidelines worthy of assisting rehabilitation teams in individualizing appropriate strategic plans for stroke patients.
This work was based on a Ph.D. thesis (Siriphan Kongsawasdi) from Clinical Epidemiology Program, Faculty of Medicine, Chiang Mai University, Thailand.
Conflicts of Interest
The authors declare that there are no conflicts of interest.
The authors thank Professor Jayanthorn Patumanond, M.D., Ph.D., and Assistant Professor, Chidchanok Ruengorn, Ph.D., for their contribution in data analysis.
 J. N. Fink, C. M. Frampton, P. Lyden, and K. R. Lees, "Does hemispheric lateralization influence functional and cardiovascular outcomes after stroke?: An analysis of placebo-treated patients from prospective acute stroke trials," Stroke, vol. 39, no. 12, pp. 3335-3340, 2008.
 B. Mohr, L. J. MacGregor, S. Difrancesco, K. Harrington, F. Pulvermuller, and Y. Shtyrov, "Hemispheric contributions to language reorganisation: An MEG study of neuroplasticity in chronic post stroke aphasia," Neuropsychologia, vol. 93, pp. 413-424, 2016.
 H. Ito, O. Kano, and K. Ikeda, "Different Variables Between Patients with Left and Right Hemispheric Ischemic Stroke," Journal of Stroke and Cerebrovascular Diseases, vol. 17, no. 1, pp. 35-38, 2008.
 J. Lin, H. Zuo, B. Hong et al., "Mapping language area in the frontal lobe of the left-dominant hemisphere with high gamma electrocorticography," Journal of Neurolinguistics, vol. 35, pp. 85-95, 2015.
 M. S. Stein, C. Kilbride, and F. A. Reynolds, "What are the functional outcomes of right hemisphere stroke patients with or without hemi-inattention complications? A critical narrative review and suggestions for further research," Disability and Rehabilitation, vol. 38, no. 4, pp. 315-328, 2016.
 B. Gialanella and C. Ferlucci, "Functional outcome after stroke in patients with aphasia and neglect: assessment by the motor and cognitive functional independence measure instrument," Cerebrovascular Disease, vol. 30, no. 5, pp. 440-447, 2010.
 P. M. Pedersen, H. S. Jorgensen, H. Nakayama, H. O. Raaschou, and T. S. Olsen, "Hemineglect in acute stroke - Incidence and prognostic implications: The Copenhagen Stroke Study," American Journal of Physical Medicine & Rehabilitation, vol. 76, no. 2, pp. 122-127,1997.
 L. R. Cherney, A. S. Halper, C. M. Kwasnica, R. L. Harvey, and M. Zhang, "Recovery of functional status after right hemisphere stroke: Relationship with unilateral neglect," Archives of Physical Medicine and Rehabilitation, vol. 82, no. 3, pp. 322-328, 2001.
 A. J. Yoo, J. Romero, R. Hakimelahi et al., "Predictors of functional outcome vary by the hemisphere of involvement in major ischemic stroke treated with intra-arterial therapy: A retrospective cohort study," BMC Neurology, vol. 10, article no. 25, 2010.
 V. S. Hedna, A. N. Bodhit, S. Ansari et al., "Hemispheric differences in ischemic stroke: Is left-hemisphere stroke more common?" Journal of Clinical Neurology, vol. 9, no. 2, pp. 97-102, 2013.
 A. Goto, S. Okuda, S. Ito et al., "Locomotion outcome in hemiplegic patients with middle cerebral artery infarction: the difference between right- and left-sided lesions," Journal of Stroke and Cerebrovascular Diseases, vol. 18, no. 1, pp. 60-67, 2009.
 A. T. Patel, P. W. Duncan, S.-M. Lai, and S. Studenski, "The relation between impairments and functional outcomes post-stroke," Archives of Physical Medicine and Rehabilitation, vol. 81, no. 10, pp. 1357-1363, 2000.
 Y. Laufer, D. Sivan, R. Schwarzmann, and E. Sprecher, "Standing Balance and Functional Recovery of Patients with Right and Left Hemiparesis in the Early Stages of Rehabilitation," Neurorehabilitation and Neural Repair, vol. 17, no. 4, pp. 207-213, 2003.
 S. N. Macciocchi, P. T. Diamond, W. M. Alves, and T. Mertz, "Ischemic stroke: relation of age, lesion location, and initial neurologic deficit to functional outcome," Archives of Physical Medicine and Rehabilitation, vol. 79, no. 10, pp. 1255-1257, 1998.
 B. B. Johansson, G. Jadback, B. Norrving, H. Widner, and I. Wiklund, "Evaluation of long-term functional status in first-ever stroke patients in a defined population," Scandinavian Journal of Rehabilitation Medicine. Supplement, vol. 26, pp. 105-114, 1992.
 J. E. Ween, M. P. Alexander, M. D'Esposito, and M. Roberts, "Factors predictive of stroke outcome in a rehabilitation setting," Neurology, vol. 47, no. 2, pp. 388-392,1996.
 D. Woo, J. P. Broderick, R. U. Kothari et al., "Does the National Institutes of Health Stroke Scale favor left hemisphere strokes?" Stroke, vol. 30, no. 11, pp. 2355-2359, 1999.
 N. Y. H. Yang, D. Zhou, R. C. K. Chung, C. W. P. Li-Tsang, and K. N. K. Fong, "Rehabilitation interventions for unilateral neglect after stroke: A systematic review from 1997 through 2012," Frontiers in Human Neuroscience, no. 2013, 2013.
 J. M. Perez-Marmol, M. C. Garcia-Rios, F. J. Barrero-Hernandez, G. Molina-Torres, T. Brown, and M. E. Aguilar-Ferrandiz, "Functional rehabilitation of upper limb apraxia in poststroke patients: Study protocol for a randomized controlled trial," Trials, vol. 16, no. 1, article no. 508, 2015.
 S. A. Rodriguez Hernandez, A. A. Kroon, M. P. J. Van Boxtel et al., "Is there a side predilection for cerebrovascular disease?" Hypertension, vol. 42, no. 1, pp. 56-60, 2003.
 G. Kim, D. Min, E.-O. Lee, and E. K. Kang, "Impact of co-occurring dysarthria and aphasia on functional recovery in post-stroke patients," Annals of Rehabilitation Medicine, vol. 40, no. 6, pp. 1010-1017, 2016.
 K. Hilari, J. J. Needle, and K. L. Harrison, "What are the important factors in health-related quality of life for people with aphasia? A systematic review," Archives of Physical Medicine and Rehabilitation, vol. 93, no. 1, pp. S86-S95, 2012.
 A. C. Laska, A. Hellblom, V. Murray, T. Kahan, and M. Von Arbin, "Aphasia in acute stroke and relation to outcome," Journal of Internal Medicine, vol. 249, no. 5, pp. 413-422, 2001.
 J. L. Banks and C. A. Marotta, "Outcomes validity and reliability of the modified rankin scale: implications for stroke clinical trials--a literature review and synthesis," Stroke, vol. 38, no. 3, pp. 1091-1096, 2007.
 C. O. Akosile, B. O. A. Adegoke, N. O. Raji, C. C. Anyanwu, and G. C. Orji, "Gait quality and physical functioning of stroke survivors with and without aphasia," Hong Kong Physiotherapy Journal, vol. 31, no. 1, pp. 25-29, 2013.
 M. Ali, P. Lyden, and M. Brady, "Aphasia and dysarthria in acute stroke: Recovery and functional outcome," International Journal of Stroke, vol. 10, no. 3, pp. 400-406, 2015.
 S. Kongsawasdi, J. Klaphajone, K. Watcharasaksilp, and P. Wivatvongvana, "Clinical predictors for walking recovery within six months post stroke: A retrospective cohort study in Thailand," Physiotherapy Practice and Research, vol. 38, no. 2, pp. 87-92, 2017.
 H. T. Hendricks, J. van Limbeek, A. C. Geurts, and M. J. Zwarts, "Motor recovery after stroke: a systematic review of the literature," Archives of Physical Medicine and Rehabilitation, vol. 83, no. 11, pp. 1629-1637, 2002.
 R. L. Harvey, "Predictors of Functional Outcome Following Stroke," Physical Medicine and Rehabilitation Clinics of North America, vol. 26, no. 4, pp. 583-598, 2015.
 Y. Hara, "Brain plasticity and rehabilitation in stroke patients," Journal of Nippon Medical School, vol. 82, no. 1, pp. 4-13, 2015.
Siriphan Kongsawasdi, (1) Jakkrit Klaphajone (iD), (2) Kanokwan Watcharasaksilp (iD), (3) and Pakorn Wivatvongvana (2)
(1) Clinical Epidemiology Program, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
(2) Department of Rehabilitation Medicine, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
(3) Department of Internal Medicine, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
Correspondence should be addressed to Jakkrit Klaphajone; firstname.lastname@example.org
Received 13 January 2018; Revised 27 February 2018; Accepted 15 March 2018; Published 2 May 2018
Academic Editor: Noureddin Nakhostin Ansari
Table 1: Demographic data, premorbid health status, and stroke-related characteristics of individuals with left- and right-sided hemispheric lesion at baseline (n = 350). Left hemisphere Characteristics (n = 167) Gender Male 89 53.29 Female 78 46.71 Subtype Large artery atherosclerosis 121 72.46 Cardioembolism 4 2.39 Small-vessel occlusion 42 25.15 Age, mean ([+ or -] SD) 63.71 (13.41) Blood pressure, mean ([+ or -] SD) Admission SBP 155.99 (30.06) Admission DBP 87.8 (20.34) Glasgow Coma Score 12.8 (2.34) Prior TIA 14 8.09 Atrial fibrillation 44 25.43 Smoking 46 26.59 Alcohol consumption 25 14.45 Comorbidity Hypertension 121 72.45 Dyslipidemia 98 58.68 Diabetes mellitus 47 28.14 Other comorbidities (1) Comorbidity 53 31.73 (2) More comorbidities 41 24.55 Right hemisphere Characteristics (n = 183) p value Gender 1.00 Male 97 53.00 Female 86 46.99 Subtype 0.58 Large artery atherosclerosis 131 71.58 Cardioembolism 2 1.09 Small-vessel occlusion 50 27.32 Age, mean ([+ or -] SD) 63.98 (12.76) 0.85 Blood pressure, mean ([+ or -] SD) Admission SBP 152.4 (28.37) 0.25 Admission DBP 86.6 (17.53) 0.57 Glasgow Coma Score 14.0 (1.84) <0.001 ** Prior TIA 13 7.03 0.69 Atrial fibrillation 62 33.51 0.24 Smoking 59 31.89 0.30 Alcohol consumption 34 18.38 0.39 Comorbidity Hypertension 123 67.21 0.29 Dyslipidemia 97 53.00 0.30 Diabetes mellitus 30 16.39 <0.01 * Other comorbidities 0.20 (1) Comorbidity 53 28.96 (2) More comorbidities 60 32.78 TIA, transient ischemic attack; SBP, systolic blood pressure; DBP, diastolic blood pressure; * p < 0.01 and ** p < 0.001. Table 2: Comparison of six-month follow-up motor assessment and poststroke complications between left- and right-sided hemispheric lesions. Left Right hemisphere hemisphere (n = 167) (n = 183) Characteristics N % N % Follow-up motor assessment MMT arm Grade 0-1 53 31.74 63 34.42 Grade 2-3 62 37.12 61 33.33 More than 3+ 52 31.14 59 32.24 MMT leg Grade 0-1 52 31.14 60 32.79 Grade 2-3 62 37.12 61 33.33 More than 3+ 53 31.74 63 34.43 Stroke-related complications Aphasia *** Dysarthria 46 26.59 93 50.27 Motor/sensory aphasia 40 23.12 6 3.24 Global aphasia 48 27.75 8 4.32 Inattention *** 7 4.05 32 17.30 Dysphagia 17 9.83 10 5.41 Apraxia 3 1.73 2 1.08 Depression 9 5.20 13 7.03 Other complications (1) Complication 42 24.42 36 19.57 (2) More complications 17 9.88 22 11.96 *** p < 0.001. Table 3: Independent predictors of walking and functional recovery from left-sided hemispheric stroke from a univariable analysis with the generalized linear model. Predictors RR 95% CI p value Walking recovery Aphasia 1.86 1.23-2.19 <0.001 *** Inattention 2.37 1.02-5.49 0.04 * Motor: arm 2.52 1.73-3.67 <0.001 *** Motor: leg 2.65 1.83-3.84 <0.001 *** Functional recovery Aphasia 1.65 1.16-2.36 <0.01 ** Poststroke complications 1.73 1.78-2.54 <0.01 ** Motor: arm 2.23 1.62-3.74 <0.001 *** Motor: leg 2.47 1.76-3.28 <0.001 *** RR, risk ratio; CI, confidence interval; * p < 0.05; ** p < 0.01; *** p < 0.001. Table 4: Independent predictors of walking and functional recovery of left-sided hemispheric stroke within 6 months after stroke using multivariable analysis with the generalized linear model. Predictors RR 95% CI p value Walking capacity Motor: leg 2.41 1.61-3.60 <0.001 ** Functional recovery Motor: leg 1.83 1.03-3.26 0.04 * RR, risk ratio; CI, confidence interval; * p < 0.05; ** p < 0.001. Figure 1: Proportion of patients with a left- or right-sided hemispheric lesion who achieved walking and functional recovery. Left Right Walking recovery 61.85 66.49 Functional recovery 73.55 69.14 Note: Table made from bar graph.
|Printer friendly Cite/link Email Feedback|
|Title Annotation:||Research Article|
|Author:||Kongsawasdi, Siriphan; Klaphajone, Jakkrit; Watcharasaksilp, Kanokwan; Wivatvongvana, Pakorn|
|Publication:||The Scientific World Journal|
|Date:||Jan 1, 2018|
|Previous Article:||Environmental Factors Associated with Mosquito Vector Larvae in a Malaria-Endemic Area in Ratchaburi Province, Thailand.|
|Next Article:||Pharmacological Evaluation of Selected Medicinal Plants Used in the Management of Oral and Skin Infections in Ebem-Ohafia District, Abia State,...|