Factors associated with 30-day mortality
| Alive | Died | Univariate logistic regression OR (95% CI, p value) | Multilevel logistic regression OR (95% CI, p value) | |
|---|---|---|---|---|
| HDI tertile | ||||
| High | 688 (99.1) | 6 (0.9) | – | – |
| Middle | 436 (97.1) | 13 (2.9) | 3.42 (1.34 to 9.79, p=0.013) | 5.57 (1.90 to 16.39, p=0.002) |
| Low | 243 (91.7) | 22 (8.3) | 10.38 (4.42 to 28.46, p<0.001) | 7.79 (2.96 to 20.48, p<0.001) |
| Age | ||||
| Child (>2 years <16 years) | 1095 (98.6) | 16 (1.4) | – | – |
| Infant (>1 month<2 years) | 140 (94.0) | 9 (6.0) | 4.40 (1.83 to 9.95, p=0.001) | 0.91 (0.35 to 2.38, p=0.849) |
| Neonate (≤1 month) | 131 (89.1) | 16 (10.9) | 8.36 (4.06 to 17.22, p<0.001) | 2.27 (0.92 to 5.62, p=0.075) |
| Gender | ||||
| Male | 794 (97.4) | 21 (2.6) | – | – |
| Female | 573 (96.6) | 20 (3.4) | 1.32 (0.70 to 2.47, p=0.382) | 1.98 (1.00 to 3.94, p=0.051) |
| ASA | ||||
| 1 | 964 (98.7) | 13 (1.3) | – | – |
| >1 | 403 (93.5) | 28 (6.5) | 5.15 (2.69 to 10.37, p<0.001) | 1.47 (0.67 to 3.25, p=0.337) |
| Perforated viscus | ||||
| No | 1157 (97.6) | 28 (2.4) | – | – |
| Yes | 200 (93.9) | 13 (6.1) | 2.69 (1.33 to 5.17, p=0.004) | 2.63 (1.21 to 5.73, p=0.015) |
| Primary operation | ||||
| Non-appendicectomy | 447 (92.0) | 39 (8.0) | – | – |
| Appendicectomy | 920 (99.8) | 2 (0.2) | 0.02 (0.00 to 0.08, p<0.001) | 0.04 (0.01 to 0.18, p<0.001) |
n=1398, AIC=282.7, c-statistic=0.902, H&L GOF=χ2=6.418, df=8, p value=0.601.
AIC, Akaike information criterion; ASA, American Society of Anesthesiologists; df, degree of freedom; H and L, Hosmer-Lemeshow Goodness of fit; HDI, Human Development Index.