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Table 5 Net monetary benefit regression with WTP set at 50,000 € per QALY

From: Cost-utility analysis of a preventive home visit program for older adults in Germany

Variable Coefficient p value
b (SE)
Group (ref.: control group) −4,096.59 (3,894.24) 0.29
Study center (ref.: Leipzig) −3,711.82 (5,016.88) 0.46
Group*Study Center 8,446.42 (5,904.94) 0.15
Age at baseline (centered) 623.33 (422.18) 0.14
Gender (ref.: male) 3,888.47 (3,732.30) 0.30
EQ-5D index at baseline (centered) 41,391.13 (7,215.78) 0.00**
18-month costs at baseline (centered) −0.44 (0.22) 0.04*
MMSE score at baseline (centered) 922.17 (721.08) 0.20
Barthel index score at baseline (centered) 221.85 (206.14) 0.28
IADL score at baseline (centered) 3,570.256 (1,534.46) 0.02*
GDS score at baseline (reversed, centered) 3,529.91 (1,759.86) 0.05*
Intercept 19,761.49 (4,284.06) 0.00
  1. n = 278; bootstrapped standard errors (SE) based on 4,000 replications; R2: 0.55; GDS: Geriatric depression scale; IADL: Instrumental activities of daily living; MMSE: Mini mental state examination; *p ≤ 0.05; **p ≤ 0.001.