BMC Geriatrics

Table 2 Prevalence of anemia^a among adults aged 50 years and older, SAGE China Wave 1

From: Association between anemia and frailty in 13,175 community-dwelling adults aged 50 years and older in China

	Men (n = 5044)		Women (n = 5482)		Total (n = 10,526)
	%	95%CI	%	95%CI	%	95%CI
Total	31.7	[29.0, 34.5]	30.3	[27.3, 33.5]	31.0	[28.4, 33.8]
Age
50–59	26.5	[22.7, 30.7]	29.4	[26.2, 32.8]	27.9	[24.7, 31.2]
60–69	30.2	[26.2, 34.4]	29.8	[26.2, 33.7]	30.0	[26.8, 33.5]
70–79	38.5	[33.4, 43.8]	37.8	[33.2, 42.5]	38.1	[33.7, 42.7]
80+	43.8	[36.2, 51.7]	38.9	[31.1, 47.4]	41.2	[35.5, 47.1]
F	9.628		3.231		4.221
P	< 0.001		0.006		0.002
Residence
Urban	48.5	[42.6, 54.5]	44.3	[39.9, 48.8]	46.3	[41.5, 51.2]
Rural	18.3	[15.7, 21.2]	20.7	[17.6, 24.0]	19.4	[16.8, 22.2]
F	94.443		59.367		76.318
P	< 0.001		< 0.001		< 0.001
Education
No formal education	33.0	[28.0, 38.4]	35.4	[31.6, 39.5]	34.7	[31.2, 38.5]
Less than primary	27.1	[22.3, 32.6]	29.9	[25.8, 34.3]	28.5	[24.6, 32.7]
Primary school completed	29.8	[24.8, 35.3]	33.7	[29.6, 38.2]	31.4	[27.3, 35.7]
Secondary school completed	32.9	[27.9, 38.4]	28.5	[23.6, 33.9]	31.2	[26.8, 35.9]
High school completed	29.4	[20.5, 40.4]	27.5	[21.2, 34.8]	28.6	[21.5, 37.1]
College completed and above	29.5	[17.8, 44.8]	20.0	[12.2, 31.0]	26.1	[16.2, 39.1]
F	0.515		3.862		4.656
P	0.653		< 0.001		< 0.001
Wealth Quintile
Q1(Lowest)	26.0	[21.9, 30.6]	33.5	[28.8, 38.6]	29.8	[26.0, 33.9]
Q2	29.0	[25.1, 33.3]	31.0	[26.3, 36.1]	30.0	[26.1, 34.2]
Q3	29.0	[24.7, 33.6]	30.4	[26.6, 34.5]	29.7	[26.2, 33.4]
Q4	25.9	[21.2, 31.2]	28.2	[24.4, 32.2]	27.0	[23.1, 31.2]
Q5(Highest)	42.3	[35.3, 49.7]	36.9	[32.1, 42.0]	39.7	[34.1, 45.5]
F	8.557		4.624		7.400
P	< 0.001		< 0.001		< 0.001

^aWeighted results

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