Supplementary Table 2.  Sensitivity analysis of patients hospitalized for ≤60 days.

Type of sensitivity analysis	β	95% CI		P-value	F-statistic
Multiple imputation analysis (n=2635)	−2.02	−3.84	−0.20	0.03	28.0
Best-case imputation* (n=2176)	−2.32	−4.41	−0.22	0.03	31.0
Best-case imputation** (n=2635)	−1.83	−3.93	0.28	0.09	42.9
Worst-case imputation† (n=2176)	−2.22	−4.29	−0.16	0.03	28.5
Worst-case imputation‡(n=2635)	−2.07	−4.82	0.69	0.14	43.1
Complete case analysis (n=1169)	−2.12	−5.99	1.76	0.29	16.7

The models were adjusted for age, sex, site of fracture, Barthel index score at admission, Charlson comorbidity index score, residence before admission, BMI at admission, use of home health care services before admission, level of dementia, length of hospital stay, admission by ambulance, and frequency/intensity of in-hospital rehabilitation treatment.

Clustering of standard errors within hospitals was considered.

* Missing values for the Barthel index at admission, BMI at admission, and use of home health care services before admission were set to 100 (good score), 18.5–24.9, and no, respectively.

** Missing values for the Barthel index at admission, BMI at admission, and use of home health care services before admission were set to 100 (good score), 18.5–24.9, and no, respectively. Furthermore, missing values for the Barthel index score at discharge were set to 100 (good score).

† Missing values for the Barthel index at admission, BMI at admission, and use of home health care services before admission were set to 0 (poor score), <18.5, and yes, respectively.

‡ Missing values for the Barthel index at admission, BMI at admission, and use of home health care services before admission were set to 0 (poor score), <18.5, and yes, respectively. Furthermore, missing values for the Barthel index at discharge were set to 0 (poor score).