. Author manuscript; available in PMC: 2022 Sep 1.

Published in final edited form as: Obstet Gynecol. 2021 Sep 1;138(3):409–416. doi: 10.1097/AOG.0000000000004508

Table 3.

Labor and intervention characteristics^*

	Any intervention (N = 2,251)	Oxygen (N = 1,698)	IVF bolus (N = 659)	Amnioinfusion (N = 240)	Tocolysis (N = 45)
Stage of Labor at intervention First Second	2,012 (89.4) 239 (10.6)	1,496 (88.1) 202 (11.9)	602 (91.4) 57 (8.7)	237 (98.8) 3 (1.3)	42 (93) 3 (7)
Study assignment ST Analysis CTG only	1,043 (46.3) 1,208 (53.7)	792 (46.6) 906 (53.4)	313 (47.5) 346 (52.5)	117 (48.8) 123 (51.3)	18 (40) 27 (60)
Given in combination with another intervention^†	376 (16.7)	370 (21.8)	340 (51.6)	37 (15.4)	20 (44)

IVF = intravenous fluid

Data are n (%)

Note: If >1 type of intervention was performed at the same time, the case will appear in multiple columns.

^†

Number of patients receiving more than one intervention listed in table. For specific intervention, refers to number receiving intervention in addition to another listed intervention in table.