Fig. 2

Kaplan-Meier survival estimates of the sampling-to-delivery interval for (a) plasma IL-6 of ≥4.8 or < 4.8 pg/mL (median, 5.00 days [95% CI, 0.70–9.30] vs. 45.00 days [95% CI, 35.31–54.69]; P < 0.001), (b) serum CRP of ≥3.5 or < 3.5 mg/L (median, 19.00 days [95% CI, 5.39–32.62] vs. 50.00 days [95% CI, 39.83–60.17]; P = 0.001), and (c) AF IL-6 of ≥1.5 or < 1.5 ng/mL (median, 5.00 days [95% CI, 1.99–8.01] vs. 47.00 days [95% CI, 38.86–55.14]; P < 0.001). IL, interleukin; CI, confidence interval; CRP, C-reactive protein; AF, amniotic fluid