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

Table 3 Multivariate analysis of factors related to intrapartum fever

Risk factor	B	SE	Wald	P	OR	95% CI
Nulliparity	0.89	0.38	5.40	0.02	2.43	1.15–5.15
Pre-labour ROM	0.86	0.38	5.21	0.02	2.37	1.13–4.95
Epidural labour analgesia	1.06	0.44	5.87	0.02	2.89	1.23–6.82
Amniotic fluid pollution degree III	2.34	0.59	15.99	0.00	10.39	3.30–32.73
The second stage of the labour ≥ 120 min	1.47	0.57	6.61	0.01	4.36	1.42–13.41
Foetal weight	2.01	0.65	9.74	0.00	7.49	2.12–26.54
Analgesia time < 4 h			11.82	0.00
Analgesia time (4–6 h)	-0.82	0.56	2.51	0.14	0.44	0.15–1.32
Analgesia time > 6 h	0.80	0.52	2.36	0.12	2.22	0.80–6.14

Abbreviations: B Beta, CI Confidence interval, OR Odds ratio, ROM Rupture of the membrane, SE Standard error

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