Table 3.

Estimates (standard errors) from the mixed models predicting the relationships with PSG-assessed sleep and menopause transition groups

	Sleep duration		WASO		NREM EEG delta power		NREM EEG beta power		REM EEG delta power		REM EEG beta power
	Estimate (SE)	p value	Estimate (SE)	p value	Estimate (SE)	p value	Estimate (SE)	p value	Estimate (SE)	p value	Estimate (SE)	p value
Age at sleep 1	−0.042 (0.033)	0.216	0.037 (0.022)	0.090	−0.013 (0.009)	0.140	−0.008 (0.008)	.291	−0.013 (0.007)	.072	−0.005 (0.009)	0.565
Race (White referent)		0.016		0.017		0.096		.476		.280		0.936
Black	−0.325 (0.148)	0.030	0.281 (0.097)	0.015	−0.063 (0.040)	0.118	−0.004 (0.037)	.919	−0.046 (0.035)	.187	0.013 (0.042)	0.765
Chinese	−0.381 (0.200)	0.059	−0.054 (0.131)	0.680	−0.076 (0.050)	0.135	−0.057 (0.047)	.226	−0.040 (0.044)	.367	0.011 (0.053)	0.836
Duration between sleep studies	0.104 (0.104)	0.318	0.038 (0.071)	0.592	0.053 (0.017)	0.002	−0.002 (0.022)	.927	0.015 (0.017)	.380	−0.020 (0.015)	0.182
Sleep 1, sleep 2 assessment (time)	−0.560 (0.429)	0.193	−0.086 (0.293)	0.770	−0.170 (0.068)	0.014	0.042 (0.089)	.639	−0.021 (0.069)	.767	0.163 (0.059)	0.006
Transition group (referent, remaining pre−-/early perimenopause)		0.301		0.905		0.497		.030		.177		0.903
Late perimenopause	−0.223 (0.225)	0.323	−0.038 (0.151)	0.803	0.058 (0.052)	0.266	0.126 (0.052)	.018	0.084 (0.046)	.074	0.043 (0.053)	0.419
Postmenopausal	−0.319 (0.183)	0.084	−0.058 (0.123)	0.634	0.030 (0.040)	0.452	0.053 (0.041)	.193	0.051 (0.036)	.156	0.020 (0.041)	0.626
Interaction between time × transition group		0.329		0.427		0.413		.033		.228		0.173

Note. Site is included in all models.