Table 4: Distribution frequencies of the three groups according to the intrapartum factors.

UCISpontaneous vaginal delivery ( 𝑁 = 7 3 5 )Caesarean section ( 𝑁 = 9 3 ) 𝑃 value

Hypocoiled78 (10.6%)15 (16.1%)0.060
Normocoiled595 (81.0%)61 (65.6%)
Hypercoiled62 (8.4%)17 (18.3%)0.001*

UCISpontaneous vaginal delivery ( 𝑁 = 7 3 5 )Instrumental deliveries ( 𝑁 = 1 7 2 )

Hypocoiled78 (10.6%) 24 (14.0%)0.188
Normocoiled595 (81.0%) 127 (73.8%)
Hypercoiled62 (8.4%) 21 (12.2%)0.110

UCINormal ( 𝑁 = 8 1 9 )Abnormal FHR ( 𝑁 = 1 8 1 ) 𝑃 value

Hypocoiled83 (10.1%)34 (18.8%)<0.001*
Normocoiled666 (81.3%)117 (64.6%)
Hypercoiled70 (8.5%)30 (16.6%)<0.001*

UCINormal ( 𝑁 = 8 0 0 )MSL ( 𝑁 = 2 0 0 ) 𝑃 value

Hypocoiled86 (10.8%)31 (15.5%)0.020*
Normocoiled649 (81.1%)134 (67.0%)
Hypercoiled65 (8.1%)30 (16.6%)<0.001*

UCINormal ( 𝑁 = 9 6 3 )PPH ( 𝑁 = 3 7 ) 𝑃 value

Hypocoiled112 (11.6%)5 (13.5%)0.396
Normocoiled760 (78.9%)23 (62.2%)
Hypercoiled91 (9.4%)9 (24.3%)0.006*