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Table 2 Univariate analysis of factors related to intrapartum fever (training cohort)

From: Nomogram for perinatal prediction of intrapartum fever: a retrospective case–control study

  Febrile (n = 72) Afebrile (n = 415) P
Age [M (IQR)] 28 (4) 28 (4) 0.760
BMI, kg/m2 [M (IQR)] 26.3 (3.8) 26.8 (3.9) 0.756
Gestational age, d [M (IQR)] 275.5 (11) 275 (11) 0.466
Accompany disease, n (%)
 GDM 10 (13.9%) 52 (12.5%) 0.749
 Abnormal thyroid function 3 (4.2%) 14 (3.5%) 0.667
 Hypertension during pregnancy 1 (1.4%) 7 (1.7%) 0.854
Parity, n (%)     < 0.001
 Nulliparity 59 (81.9%) 235 (56.6%)  
 Multiparous 13 (18.1%) 180 (43.4%)  
Pre-labour ROM, n (%)    0.001
 Yes 20 (27.8%) 52 (12.5%)  
 No 52 (72.2%) 363 (87.5%)  
Body temperature on admission,℃ [M (IQR)] 36.5 (0.2) 36.5 (0.2) 0.414
WBC counts on admission, × 109 [M (IQR)] 7.95 (3.2) 8.4 (2.5) 0.360
HB on admission, g/L [M (IQR)] 12.05 ± 1.24 12.07 ± 1.1 0.995
Time from rupture of membranes to delivery, min [M (IQR)] 318.5 (671) 168 (406) 0.009
Method of membrane rupture, n (%)    0.078
 Spontaneous 40 (55.6%) 184 (44.3%)  
 Surgical 32 (44.4%) 231 (55.7%)  
Oxytocin usage, n (%)    0.004
 Yes 52 (72.2%) 224 (54%)  
 No 20 (27.8%) 191 (46%)  
Foetal weight, g [M (IQR)] 3410 (508) 3320 (480) 0.175
Amniotic fluid pollution degree III, n (%)     < 0.001
 Yes 12 (16.6%) 8 (1.9%)  
 No 60 (83.4%) 407 (98.1%)  
Duration of the first stage, min [M (IQR)] 695.9 (192.3) 417.5 (443.1)  < 0.001
Duration of the second stage, min [M (IQR)] 83.8 (48.5) 28 (38)  < 0.001
Number of vaginal examinations [M (IQR)] 3 (2) 2 (2)  < 0.001
Epidural labour analgesia, n (%)     < 0.001
 Yes 50 (69.4%) 89 (21.4%)  
 No 22 (30.6%) 326 (78.6%)  
Analgesia time, min [M (IQR)] 330 (433) 0 (100)  < 0.001
  1. Abbreviations: BMI Body mass index, GDM Gestational diabetes, HB Haemoglobin, IQR Interquartile range, M Median, ROM Rupture of membrane, WBC White blood cell