Table 2.
Relative risks (RRs) for dyspareunia 12 months postpartum among primiparous women in Denmark (n=554)
| Total n=554 |
Dyspareunia | Crude | |||||
| Yes n=211 |
No n=343 |
RR | (95% CI) | Adjusted* RR |
(95% CI) | ||
| n | n (%) | n (%) | |||||
| Degree of tear | |||||||
| No/labia/first | 191 | 47 (24.6) | 144 (75.4) | 1.00 | reference | 1.00 | reference |
| Second (spontanous) | 157 | 59 (37.8) | 97 (62.2) | 1.53 | (1.11 to 2.10) | 2.05 | (1.51 to 2.78) |
| Second (mediolateral episiotomy) | 32 | 13 (40.6) | 19 (59.4) | 1.65 | (1.01 to 2.69) | 1.62 | (0.99 to 2.67) |
| Third or fourth | 174 | 92 (52.9) | 82 (47.1) | 2.15 | (1.62 to 2.86) | 2.09 | (1.55 to 2.81) |
| BMI, pre-pregnancy (kg/m2)†, mean (SD) | |||||||
| <25 | 357 | 140 (39.2) | 217 (60.8) | 1.00 | reference | 1.00 | reference |
| 25–29.9 | 126 | 50 (39.7) | 76 (60.3) | 1.01 | (0.79 to 1.30) | 1.05 | (0.82 to 1.36) |
| >29.9 | 70 | 21 (30.0) | 49 (70.0) | 0.77 | (0.52 to 1.12) | 0.82 | (0.56 to 1.19) |
| Age at inclusion (years), mean (SD) | |||||||
| ≤25 | 141 | 52 (36.9) | 89 (63.1) | 0.94 | (0.72 to 1.22) | 0.94 | (0.72 to 1.22) |
| 26–30 | 278 | 109 (39.2) | 169 (60.8) | 1.00 | reference | 1.00 | reference |
| >30 | 135 | 50 (37.0) | 85 (63.0) | 0.94 | (0.73 to 1.23) | 0.91 | (0.70 to 1.19) |
| Active birth duration (min), mean (SD) | |||||||
| <220 | 140 | 49 (35.0) | 91 (65.0) | 0.97 | (0.71 to 1.33) | 0.90 | (0.66 to 1.24) |
| 221–340 | 141 | 51 (36.2) | 90 (63.8) | 1.00 | reference | 1.00 | reference |
| 341–570 | 143 | 52 (36.4) | 91 (63.6) | 1.00 | (0.74 to 1.37) | 1.00 | (0.74 to 1.37) |
| >570 | 130 | 59 (45.4) | 71 (54.6) | 1.26 | (0.94 to 1.68) | 1.26 | (0.92 to 1.70) |
| Second stage duration (min), mean (SD) | |||||||
| <16 | 109 | 34 (31.2) | 75 (68.8) | 0.82 | (0.59 to 1.15) | 0.80 | (0.57 to 1.12) |
| 16–30 | 187 | 71 (38.0) | 116 (62.0) | 1.00 | reference | 1.00 | reference |
| 31–45 | 89 | 29 (32.6) | 60 (67.4) | 0.86 | (0.60 to 1.22) | 0.86 | (0.61 to 1.23) |
| >45 | 169 | 77 (45.6) | 92 (54.4) | 1.20 | (0.94 to 1.54) | 1.15 | (0.88 to 1.52) |
| Birth weight (g), mean (SD) | |||||||
| <2999 | 76 | 31 (40.8) | 45 (59.2) | 1.05 | (0.76 to 1.45) | 1.09 | (0.79 to 1.51) |
| 3000–3499 | 193 | 75 (38.9) | 118 (61.1) | 1.00 | reference | 1.00 | reference |
| 3500–3999 | 210 | 82 (39.1) | 128 (60.9) | 1.01 | (0.79 to 1.28) | 0.96 | (0.75 to 1.22) |
| ≥4000 | 75 | 23 (30.7) | 52 (69.3) | 0.79 | (0.54 to 1.16) | 0.74 | (0.50 to 1.10) |
| Pre-pregnancy dyspareunia (yes) | 107 | 66 (31.3) | 41 (12.0) | 1.90 | (1.56 to 2.32) | 1.79 | (1.45 to 2.21) |
| Operative delivery (yes) | 65 | 45 (47.4) | 50 (52.6) | 1.31 | (1.03 to 1.67) | 1.18 | (0.90 to 1.54) |
| Smoker at inclusion (yes)† | 21 | 10 (47.6) | 11 (52.4) | 1.27 | (0.80 to 2.01) | 1.31 | (0.82 to 2.10) |
| Diabetes (yes) | 19 | 7 (36.8) | 12 (63.2) | 0.97 | (0.53 to 1.76) | 1.02 | (0.56 to 1.88) |
*One missing value (n=553).
†Adjusted for age, BMI, birth weight, second stage duration, active birth duration, smoking, diabetes, operative delivery and pre-pregnancy dyspareunia (second stage duration and active birth duration are not mutually adjusted for each other).
BMI, body mass index.