Total and subgroup costs at 6 months after discharge
| Covariate* | AR (95% CI) | p value | BIC† |
|---|---|---|---|
| Health care services; generalized linear model (γ distribution) | −487 | ||
| Age (per 1-yr increase) | 0.97 (0.93–1.01) | 0.18 | |
| Clinical Frailty Scale score (per 1-pt increase) | 1.89 (1.52–2.35) | < 0.001 | |
| Married | 0.58 (0.28–1.18) | 0.13 | |
| Medical products; generalized linear model (Gaussian distribution) | 110 | ||
| Age (per 1-yr increase) | 1.09 (1.04–1.15) | 0.001 | |
| Clinical Frailty Scale score (per 1-pt increase) | 1.61 (1.15–2.25) | 0.006 | |
| Length of stay (per 1-d increase) | 1.06 (1.02–1.11) | 0.003 | |
| Married | 0.35 (0.15–0.83) | 0.018 | |
| Ostomy | 5.36 (1.47–19.44) | 0.002 | |
| Lost productive hours; zero-inflated model (chance patient is certain zero?) | 1 | ||
| Age (per 1-yr increase) | 1.11 (1.03–1.19) | 0.004 | |
| Charlson Comorbidity Index (per 1-pt increase) | 0.79 (0.50–1.23) | 0.30 | |
| Clinical Frailty Scale score (per 1-pt increase) | 2.13 (1.38–3.30) | 0.001 | |
| Nested negative binomial regression (cost if working before admission) | |||
| Age (per 1-yr increase) | 0.95 (0.88–1.02) | 0.12 | |
| Clinical Frailty Scale score (per 1-pt increase) | 0.39 (0.21–0.71) | 0.002 | |
| High-acuity bed postoperatively | 2.13 (0.996–4.54) | 0.05 | |
| Sex, male | 2.28 (1.05–4.99) | 0.042 | |
| Overall cost; generalized linear model (Gaussian distribution) | −198 | ||
| Age (per 1-yr increase) | 0.96 (0.92–0.999) | 0.047 | |
| ASA classification (per 1-pt increase) | 0.59 (0.34–1.03) | 0.06 | |
| Charlson Comorbidity Index (per 1-pt increase) | 1.29 (0.93–1.79) | 0.12 | |
| Clinical Frailty Scale score (per 1-pt increase) | 1.06 (0.80–1.40) | 0.69 | |
| High-acuity bed postoperatively | 1.71 (0.97–4.08) | 0.06 | |