Table 3 Comparison of clinical factors between numeric rating scale pain score < 4 and ≥ 4 in preterm labor at < 34 weeks of gestations
Numeric rating scale pain score < 4 (n = 103) | Numeric rating scale pain score ≥ 4 (n = 45) | p | |
|---|---|---|---|
Age (year old) | 33.00 (30.00–35.00) | 33.00 (31.00–35.00) | NS |
Height (cm) | 163.00(159.20-166.40) | 161.00(157.00-165.60) | NS |
Weight (kg) | 64.60 (58.00–72.00) | 3.90 (56.60-70.55) | NS |
Body mass index (kg/m2) | 23.57 (22.29–27.25) | 24.73 (22.08–26.84) | NS |
Nulliparity (%) | 85/103 (82.5) | 28/45 (62.2) | < 0.05 |
Prior preterm birth (%) | 4/103 (3.9) | 3/45 (6.7) | NS |
Frequency of uterine contractions (numbers/10mins) | 2.00 (0.60-3.00) | 3.00 (1.00-3.75) | < 0.05 |
Cervical length (cm) | 1.98 (1.20–2.91) | 0.98 (0.00-2.64) | < 0.01 |
Cervical dilatation (cm) | 0.00 (0.00–1.00) | 1.00 (0.00–2.00) | < 0.001 |
Funneling (%) | 23/95 (24.2) | 14/38 (36.8) | NS |
Positive fetal fibronectin (%) | 32/73 (43.8) | 18/31 (58.1) | NS |
Tocolytics (%) | 42/103 (40.8) | 27/45 (60.0) | < 0.05 |
Gestation age at visit(weeks) | 28.90 (26.00-31.42) | 29.85 (25.55–32.20) | NS |
Delivery outcome | |||
Gestational age at delivery (weeks) | 36.60(34.00-37.30) | 34.10 (29.62–37.15) | < 0.01 |
Interval to delivery (days) | 43.00 (28.00–63.00) | 20.00 (1.00–46.00) | < 0.01 |
Delivery at ≤ 34 wks (%) | 27/103 (26.2) | 22/45 (48.9) | < 0.01 |
Delivery at ≤ 37 wks (%) | 57/103 (55.3) | 33/45 (73.3) | < 0.05 |
< 7 days for interval-to-delivery (%) | 8/103 (7.8) | 15/45 (33.3) | < 0.05* |
< 14 days for interval-to-delivery (%) | 13/103 (12.6) | 20/45 (44.4) | < 0.001 |