Table 2.
Bivariate associations with self-reported perineal trauma
| Factor | With trauma | Without trauma | OR | 95% CIca | |||
|---|---|---|---|---|---|---|---|
| n | (%) | n | (%) | ||||
| Ethnicity | Aboriginal | 255 | (21) | 942 | (79) | 0.28 | 0.18–0.43 |
| Mestizo | 94 | (49) | 97 | (51) | |||
| Age at delivery | 14–19 years old | 57 | (32) | 120 | (68) | 1.48 | 0.96–2.3 |
| 20–49 years old | 310 | (24) | 967 | (76) | |||
| Place of delivery | Home | 162 | (18) | 761 | (82) | 0.34 | 0.21–0.56 |
| Health facility | 205 | (39) | 327 | (61) | |||
| Parity | Primiparae | 120 | (39) | 190 | (61) | 2.31 | 1.76–3.03 |
| Multipara | 245 | (21) | 895 | (79) | |||
| Position in labour | Upright | 138 | (17) | 662 | (83) | 0.38 | 0.24–0.61 |
| Horizontal | 224 | (35) | 410 | (65) | |||
| Size of baby | Bigger than average | 96 | (24) | 302 | (76) | 0.92 | 0.70–1.19 |
| Average or smaller | 251 | (26) | 723 | (74) | |||
| Birth attendanta | Traditional midwife | 126 | (19) | 530 | (81) | 0.38 | 0.22–0.65 |
| Doctor/nurse | 210 | (39) | 333 | (61) | |||
Bold font indicates associations significant at the 5% level
OR Odds ratio, 95% CIca Cluster adjusted 95% confidence intervals
aThis excludes the few women who were assisted at delivery by a relative or by nobody