Table 1.
Univariate analysis of patient and maternal-related risk factors for SSI, post-caesarean section, throughout Al Ain Hospital, January 2016–December 2017.
| Variable | SSI Absent (n = 796) | SSI Present (n = 11) | Total (n = 807) | P value |
|---|---|---|---|---|
| Age, mean (SD), years | 31.3 (5.8) | 30.7 (8.3) | 31.2 (5.8) | 0.673 |
| Age strataa, n (%), years | 0.441 | |||
| < 35 | 555 (69.7) | 7 (63.6) | ||
| ≥ 35 | 241 (30.3) | 4 (36.4) | ||
| BMI, mean (SD) | 31.9 (5.7) | 30.9 (5.7) | 31.9 (5.7) | 0.609 |
| BMI stratab, n (%) | 0.276 | |||
| < 25 | 73 (9.3) | 2 (18.2) | ||
| ≥ 25 | 715 (90.7) | 9 (81.8) | ||
| Anesthesia type, n (%) | 0.926 | |||
| Spinal | 547 (68.7) | 7 (63.6) | ||
| General | 232 (29.1) | 4 (36.4) | ||
| Epidural | 14 (1.8) | 0 (0.0) | ||
| Epidural and general | 3 (0.4) | 0 (0.0) | ||
| Duration of Procedure, mean (SD), mints | 68.6 (27.5) | 64.8 (19.0) | 68.5 (27.4) | 0.356 |
| Length of stay, mean (SD), days | 5.2 (4.2) | 4.8 (1.6) | 5.1 (4.1) | 0.737 |
| Gestational age, mean (SD), Wks | 37.2 (2.8) | 38.8 (1.8) | 37.1 (2.8) | 0.041 |
| Gestational age stratac, n (%) | 0.217 | |||
| Preterm | 354 (45.6) | 1 (9.1) | ||
| Early term | 184 (23.7) | 3 (27.3) | ||
| Full term | 193 (24.8) | 4 (36.3) | ||
| Late term | 46 (5.9) | 3 (27.3) | ||
| Duration of anesthesia, mean (SD), mints | 92.5 (48.2) | 104.4 (23.0) | 92.6 (48.0) | 0.713 |
| Mode of delivery stratad, n (%) | 0.092 | |||
| Emergency | 632 (79.4) | 11 (100.0) | ||
| Elective | 164 (20.6) | 0 (0.0) | ||
| First CS strata, n (%) | 0.347 | |||
| No | 474 (62.5) | 7 (77.8) | ||
| Yes | 284 (37.5) | 2 (22.2) | ||
| Presence of diabetes strata, n (%) | 0.942 | |||
| No | 571 (71.7) | 8 (72.7) | ||
| Yes | 225 (28.3) | 3 (27.3) |
Variables with P values < 0.2 are presented in bold.
Body mass index (BMI): was calculated by dividing the woman’s weight (in kilograms) by height (in metres square).
aStratified based on internationally standard categories 45.
bThe classification of the World Health Organisation was employed in grouping BMI values 45.
cGestational age was classified into groups depending on the age of a pregnancy in weeks starting from the last menstrual period of the women as following: Preterm (< 37 weeks); Early term (37–38 weeks); Full term (39–40 weeks); Late term (41–42 weeks).
dMode of delivery is depending on the urgency, grade 1, 2 and 3 was classified as emergency, grade 4 and others classified as elective.