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. Author manuscript; available in PMC: 2009 Feb 1.

Published in final edited form as: Am J Obstet Gynecol. 2008 Feb;198(2):235.e1–235.e4. doi: 10.1016/j.ajog.2007.08.039

TABLE 1.

COMPARISON OF UTILITY VALUES

	TERM GROUP			PRETERM GROUP
	LABOR	NON-LABOR	P	LABOR	NON-LABOR	P
EMG Mean (mV)	3.35 ±1.06	1.42 ±0.37	<.001	2.00 ± 0.56	0.92 ± 0.30	<.001
EMG Energy (mV² x sec/Ω)	3.88 ±1.31	1.26 ±0.36	<.001	2.55 ± 0.79	1.15 ±0.43	<.001
EMG Duration (sec)	18.61 ± 4.09	13.71 ±1.76	<.001	18.47 ±3.69	15.69 ±2.79	<.001
EMG PDS Peak Frequency (Hz)	3.15 ±0.35	0.89 ±0.16	<.001	2.57 ± 0.75	1.18 ±0.36	<.001
IUP Mean (mmHg)	54.75 ± 27.48	25.13 ± 10.67	<.001	37.40 ±13.50	34.25 ± 12.12	N/S
IUP Integral (mmHg x sec)	907.28 ± 645.39	307.84 ± 95.11	<.001	538.49 ± 268.53	436.32 ± 170.23	N/S