| Factors | EHT | No EHT | OR [95% CI] | p-value |
| Parity | ||||
| Primiparous (1) | 5 | 2 | 3.9 [0.03 - 456.1] | 0.573 |
| Multiparous > 1 | 51 | 326 | ||
| Delivery route | ||||
| Vaginal delivery | 55 | 243 | 37.8 [0.2 - 8766.6] | 0.191 |
| Caesarean section | 1 | 85 | ||
| Type of birth | ||||
| Obstructed labor | 30 | 108 | 2.7 [0.2 - 37.5] | 0.446 |
| Normal labor | 26 | 220 | ||
| Birth weight in grams (g) | ||||
| <3000 | 5 | 126 | 0.2 [0.02 - 1.5] | 0.116 |
| ≥3000 | 51 | 202 | ||
| Constipation | ||||
| Yes | 33 | 14 | 4.4 [0.8 - 22.9] | 0.074 |
| No | 23 | 314 | ||
| Dyschesia | ||||
| Yes | 45 | 26 | 37.4 [6.8 - 205.7] | <0.0001 |
| No | 11 | 302 | ||
| Regular consumption of fruit | ||||
| Yes | 15 | 311 | 0.04 [0.008 - 0.3] | 0.0006 |
| No | 41 | 17 | ||
| Regular consumption of fiber-rich foods | ||||
| Yes | 30 | 322 | 0.02 [0.002 - 0.3] | 0.003 |
| No | 26 | 6 | ||
| Personal history of hemorrhoidal disease | ||||
| Yes | 33 | 32 | 23.9 [3.3 - 174.2] | 0.002 |
| No | 23 | 296 | ||
| Family history of hemorrhoidal disease | ||||
| Yes | 10 | 11 | 0.4 [0.03 - 6.5] | 0.547 |
| No | 46 | 317 | ||
| Duration of labor (hour) | ||||
| <8 | 18 | 153 | 0.5 [0.02 - 15.7] | 0.707 |
| [8 - 12[ | 10 | 60 | 0.5 [0.04 - 6.7] | 0.617 |
| [12 - 24[ | 19 | 27 | 0.09 [0.003 - 2.4] | 0.154 |
| ≥24 | 9 | 19 | ||