. Author manuscript; available in PMC: 2017 May 1.

Published in final edited form as: Am J Obstet Gynecol. 2015 Nov 18;214(5):638.e1–638.e10. doi: 10.1016/j.ajog.2015.11.007

Table 2.

Description of operative attempts

	First Operative Attempt
Information about the first operative attempt, n (%)	Vaginal trial of vacuum n=1382	Vaginal trial of forceps n=1018	Cesarean n=131	P-value^*
Fetal indication for first operative attempt (non- reassuring fetal status)	703 (50.9)	441 (43.3)	23 (17.6)	<.001

Station at first operative attempt was outlet^†	607 (43.9)	274 (26.9)	12 (9.2)	<.001

Final delivery mode was cesarean	88 (6.4)	45 (4.4)	131 (100.0)	<.001^‡

based on chi-square

^†

defined as a fetal station of +3 when using the 3rds scale or +5 when using the 5ths scale

^‡

p=.04 comparing vaginal trial of vacuum with vaginal trial of forceps