Mean length of stay (LOS) before and after service implementation
| Pre-service | Post-service | Mean LOS reduction (95% confidence interval) | Mann-Whitney U test (Mood's median test) | ||
|---|---|---|---|---|---|
| All GI surgery | Mean | 10.6 | 7.5 | 3.1 | 0.007 |
| SD | 16.2 | 9.7 | (0.7–5.5) | (0.07) | |
| Range | 122 | 96 | |||
| 95% CI | 8.3–12.8 | 6.6–8.3 | |||
| Median | 6 | 5 | |||
| Interquartile | 9 | 6 | |||
| Number | 203 | 479 | |||
| Ages 60–74 years | Mean | 10.8 | 7.6 | 3.2 | 0.061 |
| SD | 18.7 | 10.8 | (0.31–6.4) | (0.037) | |
| Range | 122 | 96 | |||
| 95% CI | 7.4–14.1 | 6.3–8.8 | |||
| Median | 6.0 | 5.0 | |||
| Interquartile | 7.75 | 6 | |||
| Number | 124 | 290 | |||
| Age ≥75years | Mean | 10.3 | 7.2 | 3 | 0.045 |
| SD | 11.3 | 7.9 | (0.2–5.8) | (0.115) | |
| Range | 62 | 54 | |||
| 95% CI | 7.7–12.8 | 6.1–8.4 | |||
| Median | 6 | 5 | |||
| Interquartile | 9 | 7 | |||
| Number | 79 | 189 | |||
| Emergency GI surgery | Mean | 11.1 | 6.7 | 4.4 | 0.005 |
| SD | 18.4 | 9.6 | (1.5–7.2) | (0.003) | |
| Range | 122 | 96 | |||
| 95% CI | 8.0–14.2 | 5.5–7.9 | |||
| Median | 6.0 | 4.0 | |||
| Interquartile | 9.0 | 5.0 | |||
| Number | 137 | 237 | |||
| Ages 60–74 years | Mean | 12.5 | 6.9 | 5.5 | 0.019 |
| SD | 22.6 | 9.6 | (0.52–11.1) | (0.019) | |
| Range | 122 | 96 | |||
| 95% CI | 7.4–17.5 | 5.1–8.9 | |||
| Median | 6 | 4 | |||
| Interquartile | 9 | 5 | |||
| Number | 80 | 236 | |||
| Age ≥75 years | Mean | 9.0 | 6.3 | 2.75 | 0.091 |
| SD | 9.5 | 6.7 | (–0.1–5.6) | (0.109) | |
| Range | 42 | 41 | |||
| 95% CI | 6.6–11.6 | 5.0–7.7 | |||
| Median | 6 | 4 | |||
| Interquartile | 8 | 6 | |||
| Number | 57 | 99 | |||
| Elective GI surgery | Mean | 9.5 | 8.2 | 1.3 | 0.189 |
| SD | 10.6 | 9.8 | (–1.4–4.03) | ||
| Range | 61.0 | 82 | |||
| 95% CI | 76.9–12.1 | 7.0–9.5 | |||
| Median | 6 | 6 | |||
| Interquartile | 7 | 7 | |||
| Number | 66 | 242 | |||
| Ages 60–74 years | Mean | 7.7 | 8.2 | 1.3 | 0.701 |
| SD | 6.8 | 10.3 | (–3.2–2.1) | (0.947) | |
| Range | 37 | 81 | |||
| 95% CI | 5.6–9.7 | 6.5–9.9 | |||
| Median | 6 | 6 | |||
| Interquartile | 4.75 | 7 | |||
| Number | 44 | 152 | |||
| Age ≥75 years | Mean | 13.3 | 8.1 | 5.2 | 0.099 |
| SD | 15.1 | 8.9 | (–1.7–12.1) | (0.186) | |
| Range | 61 | 54 | |||
| 95% CI | 6.7–20.0 | 6.3–10.0 | |||
| Median | 8 | 6 | |||
| Interquartile | 9.5 | 7.5 | |||
| Number | 22 | 84 |