Table 4.

Measured hemoglobin values using cross-tabulation of estimated glomerular filtration rate and albuminuria categories

Categories for estimated glomerular filtration rate (mL/min/1.73 m2)	Albuminuria category	Prevalence of anemia
		Mean	95% confidence interval	P for trend
<15	Normoalbuminuria	10.8	10.5–11.2	.14
	Microalbuminuria	10.2	10.1–10.4
	Macroalbuminuria	10.3	10.2–10.4
15–<30	Normoalbuminuria	11.8	11.7–11.8	<.001
	Microalbuminuria	11.6	11.6–11.7
	Macroalbuminuria	11.6	11.5–11.6
30–<45	Normoalbuminuria	12.8	12.8–12.9	<.001
	Microalbuminuria	12.7	12.7–12.8
	Macroalbuminuria	12.7	12.7–12.8
45–<60	Normoalbuminuria	13.6	13.6–13.6	<.001
	Microalbuminuria	13.5	13.5–13.5
	Macroalbuminuria	13.4	13.3–13.4
60–<90	Normoalbuminuria	14.0	14.0–14.0	<.001
	Microalbuminuria	14.0	13.9–14.0
	Macroalbuminuria	13.9	13.9–13.9