Table 2. Multivariable linear regression model for EQ5D index at 6 months, using multiple imputation.

Predictor	Estimate	SE of regression	Statistic	Degrees of freedom	p-value
Patient characteristics
Intercept	0.3514	0.203	1.73	72	0.087
EQ-5D index baseline value	0.1616	0.092	1.76	23.8	0.092
Age	0.0009	0.002	0.51	60.2	0.61
Male sex	−0.0186	0.037	−0.51	86.7	0.613
General hospital (reference: university hospital)	−0.0572	0.037	−1.54	76.8	0.129
Education (reference basic)
Intermediate	−0.0127	0.041	−0.31	79.8	0.759
High	0.0145	0.056	0.26	34.3	0.798
Migration	−0.0474	0.057	−0.83	31.8	0.41
Living situation (reference independent with others)
Independent alone	0.014	0.035	0.4	112.7	0.691
In a facility	−0.0354	0.079	−0.45	19.5	0.658
Proxy	0.027	0.08	0.34	82.2	0.736
Pre-fracture health state & risk factors
Comorbidities (CCI) (reference: 0)
1	−0.0855	0.054	−1.6	43	0.118
2	−0.0539	0.058	−0.93	51.1	0.359
3+	−0.0721	0.058	−1.24	50.8	0.22
Pre-fracture dependency	−0.1534	0.055	−2.78	30	0.009
Pre-fracture hip functionality (OHS)	0.0056	0.004	1.53	42.3	0.134
Malnutrition	0.0165	0.043	0.38	66.7	0.702
Symptoms of depression & anxiety (PHQ-4)	−0.1993	0.063	−3.15	30.2	0.004
Social support: persons to rely on
3 to 5	0.0406	0.042	0.96	46.2	0.342
More than 5	0.0082	0.05	0.16	52.4	0.871
Subjective need	−0.026	0.039	−0.67	67.4	0.503
Polypharmacy	−0.0609	0.045	−1.35	53	0.184
Fracture and hospital care
Type of fracture (reference: intracapsular)
Extracapsular	0.0164	0.06	0.27	53.2	0.785
Type of surgery (reference: internal fixation)
Arthroplasty	0.0812	0.053	1.54	140.7	0.125
ICU episode	−0.08	0.049	−1.62	23.5	0.119
Referral to a rehabilitation facility	0.0749	0.041	1.83	78.4	0.07
n = 278 R-squared: 0.525. CI [0.419; 0.619] Adjusted R-squared: 0.478. CI [0.367; 0.579]