Birthing ball on promoting cervical ripening and its influence on the labor process and the neonatal blood gas index

Table 3 Comparison of duration of labor between birthing ball group and conventional group (mean ± SD, min)

Group	n	First stage of labor	Second stage of labor	Third stage of labor	Total labor
Delivery ball group	100	510.9 ± 98.7	43.0 ± 8.5	6.1 ± 1.1	560.0 ± 120.9
Regular group	100	602.1 ± 133.2	48.4 ± 9.1	6.3 ± 1.3	656.8 ± 148.5
t		-5.501	-4.337	-1.174	-5.065
P value		0.000	0.000	0.242	0.000