Table 3.

Estimated HIV Prevalence by Center and Donor Characteristics among First Time (FT) Donors and Results of Weighted Multivariable Logistic Regression Analysis Predicting HIV Confirmatory Status

Donor Characteristics	# of Donations	Estimated # of HIV Positive Donors	Prevalence (1/100,000 FT donors & 95% CI	Results of Weighted Logistic Regression Analysis
				Odds Ratio & 95% CI	p-Value
Total	491,717	327	66 (59–74)
Blood Center					<.001
Kunming	187,545	187	100 (85–114)	1
Urumqi	89,309	34	38 (25–51)	0.36 (0.24–0.53)
Luo Yang	94,654	2	2 (0–5)	0.02 (0.01–0.08)
Liuzhou	64,283	97	151 (121–181)	1.27 (0.95–1.69)
Mianyang	55,926	15	27 (13–40)	0.29 (0.17–0.49)
Age in Years					<.001
<= 25 years	298248	135	45 (38–53)	1
26– 35	106977	123	115 (95–135)	1.83 (1.41–2.39)
36– 45	68191	54	79 (58–100)	1.64 (1.16–2.32)
46+	18296	12	66 (28–103)	1.24 (0.61–2.55)
Gender					0.465
Female	209347	117	56 (46–66)	1
Male	282370	211	75 (65–85)	1.09 (0.86–1.39)
Ethnicity					<.001
Han	425723	235	55 (48–62)	1
Others	65104	93	143 (114–172)	1.59 (1.21–2.1)
Education					<.001
Middle School	114093	118	103 (85–122)	1
High School Graduated	90438	58	64 (48–81)	0.73 (0.53–1.01)
Technician Certificate	59323	50	84 (61–108)	0.79 (0.56–1.12)
Associate Degree	107050	53	50 (36–63)	0.60 (0.43–0.84)
Complete university & above	100042	23	23 (14–32)	0.35 (0.24–0.53)