Table 2 Generalized linear model for predicting hospital LOS
From: Delay in reviewing test results prolongs hospital length of stay: a retrospective cohort study
Covariate | Estimate (β) (95% CI) | p-value |
|---|---|---|
(a) Primary analysis including all inpatients | ||
Age | 1.003 (1.001–1.005) | < 0.0001 |
Charlson comorbidity index | 1.020 (1.004–1.037) | 0.017 |
Number of test panels | 1.054 (1.048–1.060) | < 0.0001 |
Cumulative CRT (days) | 1.132 (1.116–1.149) | < 0.0001 |
Cumulative LTAT (days) | 0.996 (0.988–1.004) | 0.165 |
Number of unreviewed tests | 0.988 (0.985–0.992) | < 0.0001 |
(b) Sensitivity analysis including only patients without any unreviewed tests | ||
Age | 1.001 (0.999–1.004) | 0.267 |
Charlson comorbidity index | 1.019 (0.989–1.051) | 0.247 |
Number of test panels | 1.060 (1.047–1.073) | < 0.0001 |
Cumulative CRT (days) | 1.186 (1.154–1.221) | < 0.0001 |
Cumulative LTAT (days) | 1.028 (1.004–1.054) | 0.022 |
(c) Sensitivity analysis including only laboratory tests with abnormal results | ||
Age | 1.001 (0.999–1.002) | 0.381 |
Charlson comorbidity index | 1.020 (1.004–1.037) | 0.022 |
Number of test panels | 1.073 (1.065–1.081) | < 0.0001 |
Cumulative CRT (days) | 1.336 (1.294–1.380) | < 0.0001 |
Cumulative LTAT (days) | 1.010 (0.993–1.029) | 0.231 |
Number of unreviewed tests | 0.971 (0.958–0.984) | < 0.0001 |
(d) Sensitivity analysis including only laboratory tests with normal results | ||
Age | 1.003 (1.001–1.004) | 0.002 |
Charlson comorbidity index | 1.019 (1.003–1.036) | 0.026 |
Number of test panels | 1.063 (1.056–1.070) | < 0.0001 |
Cumulative CRT (days) | 1.122 (1.105–1.139) | < 0.0001 |
Cumulative LTAT (days) | 0.990 (0.982–0.999) | 0.002 |
Number of unreviewed tests | 0.984 (0.980–0.988) | < 0.0001 |
(e) Sensitivity analysis including only tests ordered in the first two days of admission | ||
Age | 1.003 (1.001–1.005) | 0.002 |
Charlson comorbidity index | 1.018 (1.001–1.037) | 0.057 |
Number of test panels | 1.065 (1.058–1.072) | < 0.0001 |
Cumulative CRT (days) | 1.030 (1.017–1.044) | < 0.0001 |
Cumulative LTAT (days) | 1.017 (1.008–1.027) | < 0.0001 |
Number of unreviewed tests | 0.987 (0.983–0.991) | < 0.0001 |
(f) Sensitivity analysis excluding tests ordered in the first two days of admission | ||
Age | 1.001 (1.000–1.003) | 0.159 |
Charlson comorbidity index | 0.999 (0.984–1.013) | 0.855 |
Number of test panels | 1.025 (1.020–1.031) | < 0.0001 |
Cumulative CRT (days) | 1.055 (1.046–1.064) | < 0.0001 |
Cumulative LTAT (days) | 0.990 (0.983–0.997) | 0.001 |
Number of unreviewed tests | 0.989 (0.986–0.992) | < 0.0001 |