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Table 3 Distribution of Birth Time of Parturients with Vaginal Delivery

From: Neuraxial analgesia interfered with the circadian rhythm of labor: a propensity score matched cohort study

Birth Time

SVD

n (%)

NAD

n (%)

Vaginal Delivery

n (%)

χ2

P value

0:00–2:00

292 (9.6%)

479 (15.7%)

771 (12.6%)

51.908

<0.001

2:00–4:00

307 (10.1%)

428 (14.0%)

735 (12.0%)

22.645

<0.001

4:00–6:00

264 (8.6%)

364 (11.9%)

628 (10.3%)

17.748

<0.001

6:00–8:00

264 (8.6%)

283 (9.3%)

547 (9.0%)

0.725

0.395

8:00–10:00

257 (8.4%)

239 (7.8%)

496 (8.1%)

0.711

0.399

10:00–12:00

203 (6.6%)

194 (6.4%)

397 (6.5%)

0.218

0.640

12:00–14:00

254 (8.3%)

131 (4.3%)

385 (6.3%)

41.940

<0.001

14:00–16:00

219 (7.2%)

136 (4.5%)

355 (5.8%)

20.603

<0.001

16:00–18:00

234 (7.7%)

101 (3.3%)

335 (5.5%)

55.867

<0.001

18:00–20:00

251 (8.2%)

76 (2.5%)

327 (5.4%)

98.952

<0.001

20:00–22:00

246 (8.1%)

83 (2.7%)

329 (5.4%)

85.354

<0.001

22:00–0:00

263 (8.6%)

540 (17.7%)

803 (13.1%)

110.016

<0.001

  1. SVD Spontaneous Vaginal Delivery NAD Neuroaxial Analgesia Delivery. McNemar’s test was used