The impact of betamethasone on fetal pulmonary, umbilical and middle cerebral artery Doppler velocimetry and its relationship with neonatal respiratory distress syndrome

Table 3 Two way ANOVA analysis of different Doppler indices in exposed (betamethasone) and nonexposed groups

Parameter	Source of variation	Grand mean ± sd	95% C.I	df	F_value	P_value	Partial Eta_squared	R square
UMB_PI^a	Group	0.963 ± 0.007	(0.95–0.977)	1	18.85	< 0.001	0.08	0.14
	Time			1	6.95	0.009	0.03
	Group*time			1171	6.88	0.009	0.03
MCA_PI^b	Group	1.909 ± 0.011	(1.887–1.931)	1	24.4	< 0.001	0.11	0.17
	Time			1	14.28	< 0.001	0.06
	Group*time			1171	0.644	0.42	0.003
MCA PSV^c	Group	35.98 ± 0.35	(35.28–36.68)	1	3.33	0.069	0.16	0.019
	Time			1	0.07	0.888	0.001
	Group*time			1171	0.435	0.510	0.002
Pulmonary artery PI	Group	2.15 ± 0.21	(2.11–2.19)	1	6.49	0.066	0.19	0.11
	Time			1	2.59	0.109	0.013
	Group*time			1171	1.75	0.187	0.009
Pulmonary artery RI^d	Group	0.824 ± 0.003	(0.817–0.830)	1	8.27	0.042	0.040	0.043
	Time			1	0.127	0.722	0.001
	Group*time			1171	0.549	0.459	0.003
Pulmonary artery acceleration time (AT)	Group	0.058 ± 0.001	(0.056–0.060)	1	5.84	0.016	0.028	0.045
	Time			1	0.931	0.336	0.005
	Group*time			1171	2.65	0.105	0.013
Pulmonary artery ejection time (ET)	Group	0.268 ± 0.003	(0.262–0.275)	1	0.871	0.352	0.004	0.010
	Time			1	0.484	0.487	0.002
	Group*time			1171	0.586	0.445	0.003
Pulmonary artery AT/ET	Group	0.217 ± 0.003	(0.211–0.222)	1	6.699	0.010	0.032	0.045
	Time			1	0.225	0.636	0.001
	Group*time			1171	2.506	0.115	0.012

ISSN: 1471-2393