Table 1 Patient characteristics and bivariate analysis of factors associated with death
Variable | N (%) /mean ± standard deviation) | p-value (bold* means < 0.05) | ||
|---|---|---|---|---|
Total | Survived | Died | ||
1114 (100) | 1065 (95.6) | 49 (4,4) | ||
Age (years) | 37 ± 18 | 36 ± 18 | 48 ± 20 | < 0.001* |
Age class | < 0.001* | |||
≤40 years | 699 (62.7) | 683 (64.1) | 16 (32.6) | |
>40 years | 415 (37.3) | 382 (35.9) | 33 (67.4) | |
Sex | ||||
Female | 346 (31) | 331 ± 31 | 15 ± 30.6 | > 0.9 |
Male | 768 (69) | 734 ± 69 | 34 ± 69.4 | |
Systolic blood pressure (mmHg) | 122 ± 19.5 | 122 ± 19 | 123 ± 23 | 0.8 |
Diastolic blood pressure (mmHg) | 75 ± 17.2 | 75 ± 17 | 79 ± 18 | 0.10 |
Temperature (°C) | 37.2 ± 3.2 | 37.2 ± 3.2 | 37.1 ± 0.7 | 0.5 |
Heart rate (pulsations/minute) | 91 ± 19.1 | 91 ± 19 | 100 ± 22 | 0.002* |
Respiratory rate (cycles/minute) | 23.6 ± 13.6 | 23.6 ± 13.9 | 24.7 ± 6.5 | 0.061 |
Glasgow | 0.001* | |||
Normal ( 15) | 1070 (96) | 1027 (96.4) | 43 (87.7) | |
Abnormal (⩽14) | 44 (4) | 38 (3.6) | 6 (12.3) | |
QSIRS | 0.008* | |||
Negative | 403 (35.9) | 394 (36.9) | 9 (18.3) | |
Positive | 711 (64.1) | 671 (63.1) | 40 (81.7) | |
Diabetes | ||||
No | 1078 (96.7) | 1037 (97.3) | 41 (83.6) | 0.002* |
Yes | 36 (3.3) | 28 (2.7) | 8 (16.4) | |
Hypertension | ||||
No | 1051 (94.3) | 1009 (94.7) | 42 (85.7) | 0.2 |
Yes | 63 (5.7) | 56 (5.3) | 7 (14.3) | |
Sickle cell disease | ||||
No | 1103 (99) | 1056 (99.1) | 47 (95.9) | > 0.9 |
Yes | 11 (1) | 9 (0.1) | 2 (4.1) | |
Asthma | ||||
No | 1092 (98) | 1046 (98.2) | 46 (93.8) | 0.6 |
Yes | 22 (2) | 19 (1.8) | 5 (6.2) | |
ASA score | < 0.001* | |||
ASA 1 | 950 (85.2) | 917 (86.1) | 33 (67.3) | |
ASA 2,3 or 4 | 164 (14.8) | 148 (13.9) | 16 (32.7) | |
Hemoglobin level (g/dL) | 12.6 (4.2) | 12.73 (4.42) | 11.30 (2.66) | 0.004* |
Hematocrit (%) | 36.8 ± 7.4 | 37 ± (7) | 34 ± (8) | 0.039* |
White blood cells (elements/mm3) | 11,584 ± 7845 | 11,512 ± 7883 | 13,329 ± 6712 | 0.0021 * |
Natremia (mmol/L) | 136.5 ± 5.8 | 136.6 ± 5.7 | 134.3 ± 6.3 | 0.2 |
Serum potassium (mmol/L) | 4.0 ± 4.4 | 4.06 ± 4.5 | 3.8 ± 0.72 | 0.4 |
Serum creatinine (mg/L) | 11.4 ± 6 | 11.3 ± 5.7 | 14.0 ± 9.6 | 0.10 |
Diagnostic | 0.034* | |||
Appendicitis | 444 (39.8) | 441 (41.4) | 3 (6.1) | |
Peritonitis | 249 (22.3) | 232 (21.7) | 17 (34.7) | |
Bowel obstruction | 205 (18.5) | 189 (17.8) | 16 (32.6) | |
Strangulated hernias | 117 (10.5) | 111 (10.4) | 6 (12.3) | |
Abdominal trauma | 68 (6.1) | 64 (6.1) | 4 (8.2) | |
Others | 31 (2.8) | 28 (2.6) | 3 (6.1) | |
Intestinal necrosis | ||||
No | 1077 (96.7) | 1035 (97.2) | 42 (85.7) | < 0.001* |
Yes | 37 (3.3) | 30 (2.8) | 7 (14.3) | |
Surgery waiting time (hours) | 23.7 ± 74.2 | 27 ± 75 | 35 ± 3 | 0.017* |
Operating time (minutes) | 64.7 ± 29.7 | 64 ± 29 | 87 ± 43 | 0.034* |
Length of hospitalization (days) | 7.1 ± 7.5 | 6.9 ± 11.7 | 8.7 ± 14.2 | 0.5 |