Table 3.

Association of Anemia Subtypes With Number of Insomnia Symptoms in Older Adults 50+ (Multinomial Logistic Regression)

	≥2 Insomnia Symptoms vs 0 Insomnia Symptoms
	Model 1, RRR (95% CI), (n = 1,053)	Model 2, RRR (95% CI), (n = 1,048)	Model 3, RRR (95% CI), (n = 1,013)	Model 4, RRR (95% CI), (n = 953)	Sensitivity Analysis, RRR (95% CI), (n = 759)
Not anemic	1.00 (reference)	1.00 (reference)	1.00 (reference)	1.00 (reference)	1.00 (reference)
Anemic without iron deficiency	2.65 (1.62–4.32)	2.75 (1.63–4.65)	2.39 (1.40–4.07)	2.20 (1.25–3.89)	2.60 (1.36–4.97)
p Value	<.001	<.001	.001	.007	.004

Notes: RRR = relative risk ratio. Model 1: unadjusted. Model 2: adjusted for age, sex, and race/ethnicity. Model 3: adjusted for covariates in Model 2 + number of chronic diseases (0, 1, 2+). Model 4: adjusted for covariates in Model 3 + Center for Epidemiologic Studies Depression Scale. Sensitivity analysis: adjusted for covariates in Model 4 + restless legs syndrome.