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JavaScript is disabled on your browser. Please enable JavaScript to use all the features on this page. Skip to main contentSkip to article ScienceDirect * Journals & Books * Help * Search My account Sign in * View PDF Search ScienceDirect OUTLINE 1. Abstract 2. KEYWORDS 3. List of abbreviations 4. Introduction 5. Methods 6. Results 7. Discussion 8. Conclusions 9. Supplier 10. Acknowledgment 11. Appendix. Supplementary materials 12. References Show full outline FIGURES (3) 1. 2. 3. TABLES (6) 1. Table 1 2. Table 2 3. Table 3 4. Table 4 5. Table 5 6. Table 6 EXTRAS (1) 1. Document ARCHIVES OF REHABILITATION RESEARCH AND CLINICAL TRANSLATION Available online 2 August 2024, 100362 In Press, Corrected ProofWhat’s this? ORIGINAL RESEARCH BASELINE NUTRITIONAL STATUS AND REHABILITATION PROGRESS IN INDIVIDUALS REQUIRING INPATIENT REHABILITATION: A RETROSPECTIVE COHORT STUDY Author links open overlay panelHideki Arai MD, PhD a, Syuya Okada PT a, Tatsuyuki Fukuoka SLP, PhD b, Masafumi Nozoe PT, PhD c, Kuniyasu Kamiya PT, PhD d, Satoru Matsumoto MD b Show more Outline Add to Mendeley Share Cite https://doi.org/10.1016/j.arrct.2024.100362Get rights and content Under a Creative Commons license open access ABSTRACT OBJECTIVE To evaluate the relationships between baseline nutritional status, medical events (MEs), and rehabilitation outcomes in individuals undergoing inpatient rehabilitation (IR). DESIGN A retrospective single center cohort study. SETTING An IR ward. PARTICIPANTS This study included 409 patients (mean age, 80 years; men, 170 [42%]) undergoing IR for hospital-associated deconditioning, neurologic disorders, or musculoskeletal diseases. Participants were grouped according to the Controlling Nutritional Status score at admission: normal nutrition (NN): 0 to 1, mild malnutrition (MM): 2 to 4, and moderate/severe malnutrition (M/SM): 5 to 12. INTERVENTIONS None. MAIN OUTCOME MEASURES The primary outcomes included MEs leading to death or acute illness requiring transfer to other hospitals for specialized treatments. The secondary outcomes were the rehabilitation efficiency scores (changes in Functional Independence Measure [FIM] score divided by length of stay) for motor function (FIM-M) and cognitive function (FIM-C). RESULTS Among the 409 participants, 300 (73%) were malnourished at admission. The adjusted hazard ratios (95% confidence interval) for MEs in the MM and M/SM groups relative to the NN group were 1.48 (0.67-3.27) and 0.98 (0.34-2.81), respectively. No significant differences were observed among the 3 groups in FIM-M efficiency scores (mean ± SD, NN: 0.49±0.51 vs MM: 0.41±0.57 vs M/SM: 0.44±1.06, P=.7) or FIM-C efficiency scores (0.04±0.06 vs 0.04±0.06 vs 0.08±0.4, P=0.1). Analysis of covariance showed no significant association between MM or M/SM group and FIM-M efficiency score (beta coefficient = -0.038, P=.6; beta coefficient = 0.15, P=.1, respectively) or FIM-C efficiency score (beta coefficient = 0.004, P=.8; beta coefficient = 0.047, P=.08, respectively). CONCLUSION No significant associations were observed between the baseline nutritional status and MEs, FIM-M efficiency score, or FIM-C efficiency score in individuals undergoing IR. KEYWORDS Activities of daily living Controlling Nutritional Status Functional Independence Measure Inpatient rehabilitation Malnutrition Medical events Rehabilitation LIST OF ABBREVIATIONS ADL activities of daily living ANCOVA analysis of covariance CONUT Controlling Nutritional Status FIM Functional Independence Measure FIM-C FIM for cognitive function FIM-M FIM for motor function GNRI, geriatriic nutritional risk index, IQR interquartile range IR inpatient rehabilitation ME medical event MM mild malnutrition M/SM moderate/severe malnutrition NN normal nutrition NS nutritional status PNI prognostic nutritional index INTRODUCTION Recently, increasing attention has been paid to nutritional assessment.1, 2 Nutritional status (NS) affects outcomes in cases of acute heart failure, coronary artery disease, or stroke.1, 2 Simple methods for nutritional assessment, such as the prognostic nutritional index (PNI) and geriatric nutritional risk index (GNRI), are often used in clinical practice.1,3 A meta-analysis reported that patients with heart failure and low PNI (undernourishment) had high risks of death and adverse cardiac outcomes.1 A retrospective study with 12 years of observation found that patients with acute heart failure and poor NS, as determined by the GNRI, had a high rate of bleeding events.4 Nutritional assessment is important not only in the acute care setting but also in rehabilitation medicine.3,5,6 A retrospective study with approximately 2 months of observation revealed that severe malnutrition, as measured by the PNI, was associated with poor functional outcomes in patients with ischemic stroke admitted for inpatient rehabilitation (IR).6 In addition to PNI and GNRI, Controlling Nutritional Status (CONUT) is often used in clinical practice as a simple method of nutritional assessment.3,7 The CONUT score was developed to screen for malnutrition risk in hospitalized patients, and its validity has been reported.2,8 This score is calculated as the sum of serum albumin level, total cholesterol level, and total peripheral lymphocyte count, which are indicators of protein metabolism, immune dysfunction, and energy deficiency, respectively. The risk of malnutrition is classified in order of declining CONUT score as normal nutrition (NN), mild malnutrition (MM), moderate malnutrition, and severe malnutrition.2 The CONUT score can predict outcomes in patients with stroke, coronary artery disease, acute heart failure, and cancer.2,3,7 In particular, a meta-analysis reported that stroke patients with malnutrition, as determined by the CONUT score, had higher risks of death and poor functional outcomes.2 Few reports have investigated the relationship between NS and rehabilitation progress.3,5,6 These studies have included only patients with stroke.3,5 Therefore, we investigated whether baseline NS, as assessed by the CONUT score, was associated with rehabilitation progress in patients requiring IR, including those with stroke. METHODS PARTICIPANTS This retrospective cohort study was conducted using the medical records of patients admitted to the rehabilitation unit of Toyonaka Heisei Hospital in Japan between April 2019 and March 2021 as a result of hospital-associated deconditioning, neurologic disorders, or musculoskeletal diseases. We did not plan for the retrospective study period to be a certain length so that an approximate number of patients could be used in this analysis. We used the medical records to calculate the participants’ CONUT scores at admission. We scored the participants’ serum albumin levels, total cholesterol concentrations, and total peripheral lymphocyte counts on admission, as shown in table 1. Participants were grouped according to their CONUT score by calculating the sum of the scores.2,5 CONUT score was originally categorized as NN (0-1), MM (2-4), moderate malnutrition (5-8), and severe malnutrition (9-12) (table 1).3,5 However, studies using the CONUT score have categorized scores of 0 to 1, 2 to 4, and 5 to 12 as NN, MM, and moderate/severe malnutrition (M/SM) groups, respectively.3,5 We therefore classified participants into the 3 groups. Patients whose CONUT score could not be calculated because of lack of data on serum albumin level, total cholesterol level, or total peripheral lymphocyte count were excluded. All participants were followed until they were discharged from the hospital for one of the following reasons: completion of the IR program, death, or transfer to other hospitals to receive specialized treatments for acute illness. Furthermore, those whose rehabilitation was withdrawn because of death or transfer to other hospitals were excluded from the analyses of secondary outcomes. Table 1. Assessment of the degree of undernutrition based on the Controlling Nutritional Status score ParameterUndernutrition DegreeEmpty CellNormalMildModerateSevereSerum albumin, g/dL≥3.53-3.492.5-2.9<2.5Score0246Total cholesterol, mg/dL>180140-180100-139<100Score0123Total peripheral lymphocyte, /mm3>16001200-1599800-1199<800Score0123Total score0-12-45-89-12 INPATIENT REHABILITATION IR was tailored according to the activities of daily living (ADL) of each individual, in line with the recommendations of the public medical insurance system in Japan.9 Rehabilitation was administered daily in 20-minutes units.9 Individuals with hospital-associated deconditioning were treated with 6 units of physical, occupational, and speech therapy daily for up to 90 days.9 Individuals with neurologic disorders were treated with 9 units of physical, occupational, and speech therapy daily for up to 150 days (180 days for patients with higher brain dysfunction).9 Individuals with musculoskeletal diseases were treated with 6 units of physical and occupational therapy daily for up to 90 days.9 These units were individualized according to the disability and included muscle strengthening, gait training, training for higher brain dysfunction, and swallowing training.9 No adjustment of exercise load was made based on the CONUT score. DATA COLLECTION We reviewed the hospital records to collect the following baseline data: age, sex (men), body mass index, hand-grip strength, revised Hasegawa's Dementia Scale score, disease category (hospital-associated deconditioning, neurologic disorders with or without higher brain dysfunction, and musculoskeletal diseases), comorbidities (chronic heart failure and chronic respiratory disease), laboratory data (blood hemoglobin, creatinine, blood urea nitrogen, serum total protein, and serum albumin levels), tube feeding, urinary catheter use, mobility aids, and Functional Independence Measure (FIM) for performance of ADL evaluated within 48 hours of admission and within 48 hours before discharge.9 Dementia was diagnosed as a score of ≤20 points on the revised Hasegawa's Dementia Scale.9 The level of dependence in ADL was recorded using FIM for motor domain (FIM-M; 13 items) and FIM for cognitive domain (FIM-C; 5 items).9 Individual items were scored from 1 (fully dependent) to 7 (fully independent), with higher scores indicating less need for care.9 The FIM-M and FIM-C scores were calculated as sums of individual item scores.9 OUTCOMES The primary outcomes in this study were medical events (MEs) such as all-cause death and acute illness requiring transfer to other hospitals for specialized treatments.10 From the perspective of cessation of rehabilitation, death and acute illness were considered together as a single ME, even though they differed in severity. Among individuals who completed the IR program with no MEs, secondary outcomes were FIM-M and FIM-C efficiency scores ([FIM score at discharge - FIM score at admission]/length of stay).10 STATISTICAL ANALYSIS We compared clinical features and outcomes among the groups. Categorical and continuous data were reported as frequencies (%) and mean (SD) or median (interquartile range [IQR]), as appropriate, respectively, and compared using the chi-squared test and analysis of variance or the Kruskal-Wallis test, respectively. The numbers of missing values were presented, but not imputed to ensure accurate reporting of the clinical status. Primary outcomes were analyzed based on the cumulative incidence using the Kaplan-Meier method. The log-rank test was used to evaluate group differences. The outcomes were compared among the groups using Cox proportional hazard models, with results presented as hazard ratios and 95% confidence intervals. Variables considered to be clinically relevant were included in the multivariable Cox proportional hazard models to adjust for potential confounders, including age, sex (men), hand-grip strength, chronic heart failure, and chronic respiratory disease. Furthermore, we presented the details of MEs. Analysis of covariance (ANCOVA) was conducted to evaluate relationships between baseline NS (NN, MM, or M/SM) and secondary outcomes (FIM-M and FIM-C efficiency scores). We did not assess the normality assumption of the ANCOVA. Variables deemed to be clinically relevant were included in the ANCOVA to adjust for potential confounders. Covariates for the FIM-M efficiency score were age, sex (men), hand-grip strength, revised Hasegawa's Dementia Scale, hospital-associated deconditioning, neurologic disease with or without higher brain dysfunction, musculoskeletal disorders, chronic heart failure, and chronic respiratory disease. For the FIM-C efficiency score, covariates were age, sex (men), the revised Hasegawa's Dementia Scale, hospital-associated deconditioning, neurologic disorders with or without higher brain dysfunction, and musculoskeletal diseases. To evaluate multicollinearity, we used the variance inflation factor (values of 1-10 indicated no multicollinearity). Data were analyzed using JMP 16 software.a Two-tailed P values <.05 indicated statistical significance. ETHICS The study protocol was approval by the Research Ethics Committee of the Toyonaka Heisei Hospital (No. 202402). The study was performed in accordance with the Declaration of Helsinki and the Ethical Guidelines for Medical and Health Research involving Human Subjects in Japan.11 Considering that the data analyzed in this study were drawn from medical records, an opt-out method on a notice board in the hospital was used to obtain patient consent. The study adhered to the STROBE guidelines. All necessary has been reported. RESULTS PATIENT CHARACTERISTICS Among the 428 patients included, 19 were excluded because of the inability to determine CONUT scores. Of the 409 individuals who fulfilled the eligibility criteria, 109 had NN (27%), 231 had MM (56%), 62 had moderate malnutrition (15%), and 7 had severe malnutrition (2%). Therefore, a total of 73% of patients had malnutrition (fig 1). The mean age was 80±10 years, and 170 participants (42%) were men (table 2). The median (IQR) follow-up duration was 73 (47-89) days. 1. Download: Download high-res image (368KB) 2. Download: Download full-size image Fig 1. Study flowchart. Table 2. Baseline patient characteristics VariableAll Patients (n=409)NN Group (n=109)MM Group (n=231)M/SM Group (n=69)P ValueAge, y, mean (SD)80 (10)77 (13)80 (8)82 (12).0006Men, n (%)170 (42)44 (40)91 (39)35 (51).2Body mass index, kg/m2, mean (SD)*20.4 (4)21.2 (4.6)20.5 (3.8)18.8 (3.3).0004Hand-grip strength, kg, median (IQR)* Men17 (11–22)20 (15–26)17 (10–21)14 (10–20).02 Women10 (7–15)12 (9–16)10 (7–15)6 (4–9)<.0001The revised Hasegawa's Dementia Scale, median (IQR)15 (7–24)16 (8–27)15 (8–24)14 (6–23).3Disease category, n (%) Hospital-associated deconditioning120 (29)28 (26)65 (28)27 (39).4 Neurologic disorders without higher brain dysfunction28 (7)6 (6)17 (7)5 (7) Neurologic disorders with higher brain dysfunction142 (35)40 (37)78 (34)24 (35) Musculoskeletal diseases119 (29)35 (32)71 (31)13 (19)Comorbidities, n (%) Chronic heart failure155 (38)36 (33)78 (34)41 (59).0003 Chronic respiratory disease27 (7)6 (6)14 (6)7 (10).4Baseline laboratory data Hemoglobin, g/dL, mean (SD)11.5 (1.7)12 (1.7)11.7 (1.6)10.4 (1.6)<.0001 Creatinine, mg/dL, median (IQR)0.7 (0.6–1.0)0.8 (0.6–1.0)0.7 (0.6–0.9)0.7 (0.6–1.0).3 Blood urea nitrogen, mg/dL, median (IQR)16.8 (12.9–22.2)16.4 (13.3–22.3)17.2 (13–22.2)16.8 (12.1–22.9).96 Total protein, g/dL, mean (SD)6.5 (0.6)6.8 (0.5)6.5 (0.6)6.0 (0.7)<.0001 Albumin, g/dL, mean (SD)3.7 (0.5)4.0 (0.3)3.8 (0.4)3.1 (0.4)<.0001Tube feeding, n (%)82 (20)21 (19)45 (19)16 (20).8Urinary catheter use, n (%)39 (10)6 (6)25 (11)8 (13).3Mobility aid, n (%) Wheelchair377 (92)93 (85)216 (94)68 (99).02 Walker10 (2)7 (6)3 (1)0 (0) Cane6 (1)2 (2)4 (2)0 (0) None†16 (4)7 (6)8 (3)1 (1)FIM, median (IQR) FIM-M27 (15–45)35 (16–56)26 (15–44)19 (13–33).0001 FIM-C18 (11–26)18 (11–30)19 (11–25)16 (8–24).2 ⁎ Variables with missing data: body mass index (1 in MM group); hand-grip strength (15 in NN group, 25 in MM group, and 10 in M/SM group); urinary catheter use (9 in NN group, 11 in MM group, and 6 in M/SM group). † Walking independently. Individuals with malnutrition were older than those without malnutrition (mean [SD] age, NN: 77 [13] years; MM: 80 [8] years; M/SM: 82 [12] years; P=.0006). The mean (SD) body mass index was reduced in individuals with malnutrition than in those without malnutrition (NN: 21.2 [4.6] kg/m2; MM: 20.5 [3.8] kg/m2; M/SM: 18.8 [3.3] kg/m2; P=.0004). The median (IQR) hand-grip strength was reduced in individuals with malnutrition than in those without malnutrition in men (NN: 20 [15-26] kg; MM: 17 [10-21] kg; M/SM: 14 [10-20] kg; P=.02) and women (NN: 12 [9-16] kg; MM: 10 [7-15] kg; M/SM: 6 [4-9] kg; P<.0001). No differences were observed in the median (IQR) revised Hasegawa's Dementia Scale among the 3 groups (NN: 16 [8-27]; MM: 15 [8-24]; M/SM: 14 [6-23]; P=.3). A lower median (IQR) FIM-M score was observed in individuals with malnutrition than in those without malnutrition (NN: 35 [16-56]; MM: 26 [15-44]; M/SM: 19 [13-33]; P=.0001). No differences were found among the groups in terms of the median (IQR) FIM-C score at admission (NN: 18 [11-30]; MM: 19 [11-25]; M/SM: 16 [8-24]; P=.2; table 2). OUTCOMES The cumulative incidences of MEs at 150 days in the NN, MM, and M/SM groups were 22.1%, 21.3%, and 19.9%, respectively (fig 2). The adjusted hazard ratios (95% confidence intervals) of the MM and M/SM groups relative to the NN group for MEs were 1.48 (0.67-3.27) and 0.98 (0.34-2.81), respectively (table 3). The most frequent MEs were aspiration pneumonia (n=7) and gastrointestinal bleeding (n=7), followed by congestive heart failure (n=5) and cerebral hemorrhage (n=5), most of which were observed in the malnutrition group (supplemental table S1). 1. Download: Download high-res image (470KB) 2. Download: Download full-size image Fig 2. Cumulative incidence of medical events including death and acute illness requiring transfer to other hospitals for specialized treatments. Table 3. Cox proportional hazard model for medical events such as all-cause death and acute illness requiring transfer to other hospitals for specialized treatments VariableCrude HR95% CIAdjusted HR95% CINN group (reference)----MM group1.250.65-2.41.480.67-3.27M/SM group1.060.44-2.510.980.34-2.81 NOTE. Adjusters for adverse events: age, men, hand-grip strength, chronic heart failure, and chronic respiratory disease. Abbreviations: CI, confidence interval; HR, hazard ratio. Among the 353 individuals who completed the IR program with no MEs, poor NS resulted in a longer length of stay and lower FIM scores (NN: 57 [39-85] days; MM: 74 [51-90] days; M/SM: 78 [60-93]; P=.02). The mean (SD) changes in FIM-M and FIM-C scores were not different among the groups (change in FIM-M, NN: 22 [16]; MM: 23 [16]; M/SM: 18 [18], P=.09; change in FIM-C, NN: 3 [5]; MM: 3 [4]; M/SM: 2 [3], P=.03). No differences were found among the groups in terms of mean (SD) FIM-M or FIM-C efficiency scores (FIM-M efficiency score, NN: 0.49 [0.51]; MM: 0.41 [0.57]; M/SM: 0.44 [1.06], P=.7; FIM-C efficiency score, NN: 0.04 [0.06]; MM: 0.04 [0.06]; M/SM: 0.08 [0.4], P=.1; table 4, fig 3). The ANCOVA did not reveal any multicollinearity among variables or significant association of malnutrition status with the FIM-M or FIM-C efficiency score in each group (FIM-M efficiency score, MM: beta coefficient =-0.038, P=.6; M/SM: beta coefficient =0.15, P=.1; FIM-C efficiency score, MM: beta coefficient =0.004, P=.8; M/SM: beta coefficient =0.047, P=.08; Table 5, Table 6). Table 4. Outcomes and outcome components in the 3 groups completed the inpatient rehabilitation program VariableAll Patients (n=353)NN Group (n=97)MM Group (n=196)M/SM Group (n=60)P ValueLength of stay, d, median (IQR)73 (47-89)57 (39-85)74 (51-90)78 (60-93).02FIM-M at admission, median (IQR)29 (16-47)38 (20-57)29 (16-48)20 (13-33)<.0001FIM-C at admission, median (IQR)19 (11-27)20 (12-31)19 (11-27)17 (10-24).07FIM-M at discharge, median (IQR)62 (28-80)71 (38-86)63 (31-79)40 (18-64)<.0001FIM-C at discharge, median (IQR)23 (15-30)25 (15-33)23 (16-30)18 (10-27).004Change in FIM-M, mean (SD)22 (17)22 (16)23 (16)18 (18).09Change in FIM-C, mean (SD)3 (4)3 (5)3 (4)2 (3).03FIM-M efficiency score, mean (SD)0.44 (0.67)0.49 (0.51)0.41 (0.57)0.44 (1.06).7FIM-C efficiency score, mean (SD)0.05 (0.16)0.04 (0.06)0.04 (0.06)0.08 (0.4).1 1. Download: Download high-res image (338KB) 2. Download: Download full-size image Fig 3. Distributions of functional independent measure scores and functional independent measure efficiency scores in patients who completed the inpatient rehabilitation program (n=353). Table 5. Analysis of covariance for the Functional Independence Measure for motor function efficiency score in patients completed the inpatient rehabilitation program VariableLeast Square Mean (SE)Beta coefficient95% CIP ValueVIFNN group (reference)0.49 (0.087)----MM group0.452 (0.077)-0.038-0.18 to 0.11.61.42M/SM group0.64 (0.109)0.15-0.05 to 0.35.11.52 NOTE. Covariates for FIM-M efficiency score: age, men, hand-grip strength, the revised Hasegawa's Dementia Scale, hospital-associated deconditioning, neurologic disorders without higher brain dysfunction, neurologic disorders with higher brain dysfunction, musculoskeletal diseases, chronic heart failure, and chronic respiratory disease. Abbreviations: CI, confidence interval; VIF, variance inflation factor. Table 6. Analysis of covariance for the Functional Independence Measure for cognitive function efficiency score in patients completed the inpatient rehabilitation program VariableLeast Square Mean (SE)Beta coefficient95% CIP ValueVIFNN group (reference)0.035 (0.023)----MM group0.039 (0.02)0.004-0.034 to 0.043.81.38M/SM group0.081 (0.027)0.047-0.006 to 0.099.081.42 NOTE. Covariates for FIM-C efficiency score: age, men, the revised Hasegawa's Dementia Scale, hospital-associated deconditioning, neurologic disorders without higher brain dysfunction, neurologic disorders with higher brain dysfunction, and musculoskeletal diseases. Abbreviations: CI, confidence interval; VIF, variance inflation factor. DISCUSSION We found that malnutrition was prevalent in individuals admitted to a IR ward. However, baseline NS was not significantly related to MEs or rehabilitation outcomes such as FIM-M and FIM-C efficiency scores. This study found no significant association between malnutrition at admission and MEs. Our findings align with those of a previous study.6 However, the study could not explain the lack of a significant association of NS with MEs.6 On the other hand, contrary to the findings of this study, previous studies have shown a significant association between malnutrition and MEs.1,2,4,12 The discrepancy between the present and previous findings was due to differences in study design, that is, differences in nutritional screening tools, populations, and follow-up periods.6 In particular, in the short follow-up period of almost 2 months, differences in NS may not have appeared as MEs. Moreover, our findings that MEs such as pneumonia and gastrointestinal bleeding were more common in the malnutrition group are in line with previous findings.2,4 Therefore, patients with malnutrition in IR wards need to be strictly managed to prevent the development of acute illnesses. Factors other than NS may have contributed to the lack of MEs among the 353 people who completed the IR program without MEs; however, this was not investigated in this study. This study revealed no significant relationships of malnutrition at admission with FIM-M efficiency, which is in disagreement with previous research showing significant associations between malnutrition and physical function.5,6 Although muscle weakness, fatigue, and impaired neurologic recovery due to malnutrition have been reported as possible mechanisms of the link between malnutrition and impaired physical function, the effects of malnutrition on impaired physical function remain poorly understood.5,6,13 One possible reason for the discrepancy between our findings and those of previous studies is that factors other than malnutrition may have affected the FIM-M efficiency. Reduced lower extremity range of motion and muscle strength and gait speed have been reported as factors related to ADL.8,14,15 In this study, although such factors may have made patients with malnutrition less disadvantaged than those with NN, this was not scrutinized. Our finding that malnutrition at admission was not significantly related to FIM-C efficiency was line with the findings of previous studies.2,5 This may be because of the short follow-up duration.5 A previous report showed that 2 to 13 years of follow-up is required to determine the association between low albumin level, one of the components of CONUT, and decreased cognitive function.5 Therefore, the median follow-up duration of 73 days in this study may have been inadequate to confirm the association between malnutrition at admission and FIM-C efficiency. STUDY LIMITATIONS This study had certain limitations. First, MEs were defined as death or acute illness requiring transfer to other hospitals for specialized treatments, which was decided by the attending physician, making the categorization less robust.10 Second, in-hospital changes in CONUT score were not assessed, which may be related to the level of nutrition and antihyperlipidemic medications administered during hospitalization. These changes may affect improvement in ADL.16 Third, we could not evaluate the rehabilitation protocols, which could have influenced rehabilitation outcomes.9 Finally, this was a single-center study, our results may not be applicable to other settings. Additional multicenter studies are needed to determine the effects of baseline NS on rehabilitation progress. CONCLUSIONS Almost 70% of individuals admitted to a IR ward had malnutrition; however, no significant relationship was observed between baseline NS and MEs, FIM-M, or FIM-C efficiency score. This study suggests that patients with malnutrition at admission may benefit from IR as much as those without malnutrition at admission, without an increased risk of MEs. SUPPLIER * a. JMP 16 software; SAS Institute Inc, 100 SAS Campus Dr, Cary, NC 27513. ACKNOWLEDGMENT We thank the staff in the rehabilitation ward at Toyonaka Heisei Hospital for providing excellent rehabilitation services with kindness. APPENDIX. SUPPLEMENTARY MATERIALS Download: Download Word document (27KB) Recommended articles REFERENCES 1. 1 MY Chen, JX Wen, MT Lu, et al. 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