Table 1. Descriptive statistics of baseline characteristics, by treatment group, based on the FA set.
Continuous variables are given by mean (SD) (normal data) or median (IQR) (non-normal data). Categorical variables are given by numbers (percentages).
| Baseline characteristic | Total (n = 249) | Hyoscine butylbromide (n = 125) | Placebo (n = 124) | |||
|---|---|---|---|---|---|---|
| Maternal age (in years) | ||||||
| Mean (SD) | 32.0 | (4.0) | 31.7 | (4.4) | 32.3 | (3.6) |
| Maternal age (in years) | ||||||
| <25 | 8 | (3.2%) | 6 | (4.8%) | 2 | (1.6%) |
| 25–29 | 55 | (22.1%) | 31 | (24.8%) | 24 | (19.4%) |
| 30–34 | 124 | (49.8%) | 59 | (47.2%) | 65 | (52.4%) |
| ≥35 | 62 | (24.9%) | 29 | (23.2%) | 33 | (26.6%) |
| Maternal height (in cm) | ||||||
| Mean (SD) | 167.1 | (6.7) | 167.0 | (6.6) | 167.2 | (6.8) |
| Maternal weight (in kg) | ||||||
| Median (IQR) | 62.0 | (12.0) | 61.0 | (11.0) | 63.0 | (14.0) |
| Maternal BMI (in kg/m 2 ) | ||||||
| <18.5 | 9 | (3.6%) | 7 | (5.6%) | 2 | (1.6%) |
| 18.5–24.9 | 188 | (75.5%) | 97 | (77.6%) | 91 | (73.4%) |
| 25.0–29.9 | 39 | (15.7%) | 16 | (12.8%) | 23 | (18.5%) |
| ≥30.0 | 13 | (5.2%) | 5 | (4.0%) | 8 | (6.5%) |
| Maternal marital status | ||||||
| Married | 87 | (34.9%) | 47 | (37.6%) | 40 | (32.3%) |
| Cohabiting | 150 | (60.2%) | 70 | (56.0%) | 80 | (64.5%) |
| Single | 10 | (4.0%) | 7 | (5.6%) | 3 | (2.4%) |
| Unknown | 2 | (0.8%) | 1 | (0.8%) | 1 | (0.8%) |
| Maternal higher education | ||||||
| No | 13 | (5.2%) | 4 | (3.2%) | 9 | (7.3%) |
| Yes | 234 | (94.0%) | 119 | (95.2%) | 115 | (92.7%) |
| Missing | 2 | (0.8%) | 2 | (1.6%) | 0 | (0.0%) |
| Maternal chronic diseases | ||||||
| No | 157 | (63.1%) | 82 | (65.6%) | 75 | (60.5%) |
| Yes | 91 | (36.5%) | 43 | (34.4%) | 48 | (38.7%) |
| Missing | 1 | (0.4%) | 0 | (0.0%) | 1 | (0.8%) |
| Maternal medication during pregnancy | ||||||
| No | 150 | (60.2%) | 82 | (65.6%) | 68 | (54.8%) |
| Yes | 99 | (39.8%) | 43 | (34.4%) | 56 | (45.2%) |
| Maternal pain score at baseline | ||||||
| Median (IQR) | 3.0 | (5.0) | 3.0 | (5.0) | 3.0 | (5.0) |
| Missing | 1 | (0.4%) | 0 | (0.0%) | 1 | (0.8%) |
| Maternal heart rate at baseline (in beats/min) | ||||||
| Mean (SD) | 86.5 | (14.9) | 87.5 | (15.7) | 85.4 | (13.9) |
| Fetal heart rate at baseline (in beats/min) | ||||||
| Mean (SD) | 139.8 | (10.5) | 139.6 | (10.2) | 139.9 | (10.9) |
| Cervical dilation at baseline (in cm) | ||||||
| Median (IQR) | 5.0 | (2.0) | 5.0 | (2.0) | 5.0 | (2.0) |
BMI, body mass index; FA, full analysis; IQR, interquartile range; SD, standard deviation.