Table 5.
Predictors of mortality according to univariate and multivariate logistic regression analysis
| Independent (predictors) variables | Survivors (N/%) | Non-survivors (n/%) | Univariate | Multivariate | ||
|---|---|---|---|---|---|---|
| O.R(95% C.I) | P-value | O.R(95% C.I) | P-value | |||
| Age (years) | ||||||
| < 40 | 80 (85.1%) | 14 (14.9%) | ||||
| ≥ 40 | 15(62.5%) | 9 (37.5%) | 2.21(1.32-5.33) | 0.032 | 0.22 (0.01-0.86) | 0.001 |
| Sex | ||||||
| Male | 82 (80.4%) | 20 (19.6%) | ||||
| Female | 13(81.2%) | 3(18.8%) | 0.23(0.11-1.52) | 0.056 | 1.72(0.37-2.21) | 0.084 |
| Pre-morbid illness | ||||||
| Present | 6(75.0%) | 2(25.0%) | ||||
| Absent | 88(80.0%) | 22(20.0%) | 2.42 (1.95-3.34) | 0.045 | 1.92(0.23-8.11) | 0.061 |
| HIV status | ||||||
| Positive | 6 (54.5%) | 5 (45.5%) | ||||
| Negative | 89(83.2%) | 18(16.8%) | 0.96(0.34-1.75) | 0.023 | 1.39(1.34-1.83) | 0.012 |
| CD4 count | ||||||
| ≤ 200 cells/μL | 1(25.0%) | 3(75.0%) | ||||
| > 200 cells/μL | 5(71.4%) | 2(28.6%) | 1.38(1.11-4.91) | 0.002 | 2.86 (1.64-6.32) | 0.000 |
| Mechanism of injury | ||||||
| Blunt | 85(80.2%) | 21(19.8%) | ||||
| Penetrating | 10(83.3%) | 2(16.7%) | 1.72(0.99-2.88) | 0.056 | 0.98(0.66-2.86) | 0.067 |
| Injury-arrival time (hours) | ||||||
| ≤ 24 | 69(80.2%) | 17(19.8%) | ||||
| > 24 | 26(81.2%) | 6(18.8%) | 3.28(0.43-4.21) | 0.054 | 1.93(0.98-1.64) | 0.062 |
| Associated injuries | ||||||
| Present | 32(66.7%) | 16(33.3%) | ||||
| Absent | 63(90.0%) | 7(10.0%) | 1.84(1.12-4.28) | 0.011 | 4.81(3.88-8.55) | 0.004 |
| KTSII | ||||||
| 7-10 | 85(90.4%) | 9(9.6%) | ||||
| ≤ 6 | 10(41.7%) | 14(58.3%) | 2.98(1.54-5.22) | 0.002 | 1.98(1.11-3.44) | 0.001 |
| Splenic injury grade | ||||||
| I | 4(100%) | - | ||||
| II | 14(93.3%) | 1(6.7%) | 1.98(1.43-4.91) | 2.92(1.11-6.32) | ||
| III | 35(76.1%) | 11(23.9%) | 0.23(0.12-0.83) | 5.92(2.83-6.99) | ||
| IV | 38(84.4%) | 7(15.6%) | 1.32(1.11-2.84) | 0.34(0.13-0.95) | ||
| V | 1(20.0%) | 4(80.0%) | 2.98(1.84-3.99) | < 0.05 | 0.21(0,11-0.97) | < 0.000 |
| Admission SBP | ||||||
| ≤ 90 mmHg | 16(61.5%) | 10(38.5%) | ||||
| > 90 mmHg | 79(85.8%) | 13(14.1%) | 1.08(1.01-3.89) | 0.013 | 5.21(2.73-6.98) | 0.022 |
| Estimated blood loss | ||||||
| ≤ 2000 mls | 76(82.6%) | 16(17.4%) | ||||
| > 2000 mls | 5(50.0%) | 5(50.0%) | 4.28(3,21-6.45) | 1.81(1.14-6.11) | ||
| Not estimated | 14(87.5%) | 2(12.5%) | 6.25(3.27-8.93) | < 0.05 | 3.23(1.29-4.94) | < 0.001 |
| Postoperative complications | ||||||
| Present | 21(58.3%) | 15(41.7%) | ||||
| Absent | 74(90.2%) | 8(9.8%) | 8.12(3.89-9.93) | 0.014 | 3.91(1.99-5.66) | 0.010 |
Key: O.R. = Odd ratio, C.I. = Confidence interval, SBP = Systolic blood pressure