Risk Factors Associated with False Positive HIV Test Results in a Low-Risk Urban Obstetric Population

Table 1

Demographic and obstetric characteristics of HIV positive, false positive, and negative women.

Characteristic	Positive; 𝑁=172	False positive; 𝑁=145	Negative; 𝑁=47391	𝑃
				Positive versus; false positive	Positive versus; negative	False positive; versus negative
Age: mean ± std	27.4 ± 6.2	23.9 ± 5.7	26.2 ± 5.9	<0.001	0.012	<0.001
Age				<0.001	0.021	0.002
<18	2 (1)	16 (11)	2494 (5)
18–35	152 (88)	124 (86)	41412 (87)
>35	18 (10)	5 (3)	3485 (7)
Race				<0.001	<0.001	0.102
Black	116 (67)	19 (13)	4422 (9)
White	16 (9)	8 (6)	1955 (4)
Hispanic	38 (22)	118 (81)	39975 (84)
Other	2 (1)	0 (0)	1039 (2)
Nulliparous	45 (26)	63 (43)	14488 (31)	0.001	0.210	<0.001
Parity				0.002	0.009	0.004
0	45 (26)	63 (43)	14488 (31)
1	53 (31)	47 (32)	14732 (31)
2	35 (20)	21 (14)	10690 (23)
3	19 (11)	9 (6)	4893 (10)
>3	20 (12)	5 (3)	2588 (5)
Multiple gestation	1 (1)	0 (0)	531 (1)	0.358	0.502	0.200

Data expressed as 𝑁 (%) or mean ± standard deviation.