Fig. 2.

a–d Correlation analysis between the duration of the third stage of labor and measured blood loss (MBL) (ml) of: a patients with a third stage of labor < 60 min, b patients with a third stage of labor ≥ 60 min, c patients with uterine atony, d patients without uterine atony). a Correlation of duration of the third stage of labor with MBL (ml), in patients with third stage duration < 60 min (n = 93), r = −0.14, p = 0.178. b Correlation of duration of the third stage of labor with MBL (ml), in patients with third stage duration ≥ 60 min (n = 203), r = −0.14, p = 0.178. c Correlation of duration of the third stage of labor with MBL (ml), in patients with uterine atony (n = 81), r = −0.06, p = 0.311. d Correlation of duration of the third stage of labor with MBL (ml), in patients without uterine atony (n = 215), r = 0.05, p = 0.470