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Table 4 Sensitivity and sensitivity of user-read OraQuick® HIVST compared with National RDT and laboratory reference

From: Sensitivity and specificity of OraQuick® HIV self-test compared to a 4th generation laboratory reference standard algorithm in urban and rural Zambia

   

National RDT Reference

 

Laboratory Reference

 

N*

Sensitivity

95% CI

Specificity

95% CI

Sensitivity

95% CI

Specificity

95% CI

All participants

2549

94.1

(90.2–96.7)

99.7

(99.3–99.9)

87.5

(82.7, 91.3)

99.7

(99.4, 99.9)

Gender

         

 Men only

1037

97.1

(90.1–99.7)

99.6

(98.9–99.9)

87.2

(77.7, 93.7)

99.6

(98.9, 99.9)

 Women only

1512

92.8

(87.7–96.2)

99.7

(99.2–99.9)

87.6

(81.8, 92.0)

99.8

(99.3, 100)

Location of interview

         

 Rural community

603

94.6

(81.8–99.3)

98.9

(97.7–99.6)

76.1

(61.2, 87.4)

98.9

(97.7, 99.6)

 Urban community

1030

90.0

(81.2–95.6)

99.9

(99.4–100)

87.8

(79.0, 94.1)

100

(99.6, 100)

 Urban health facility

916

96.6

(91.6–99.1)

99.9

(99.3–100)

91.3

(85.0, 95.6)

99.9

(99.3, 100)

Educational attainment

         

 Incomplete primary education

210

95.8

(78.9–99.9)

100

(98.0–100)

80.0

(61.4, 92.3)

100

(98.0, 100)

 Completed primary education and higher

2339

93.9

(89.7–96.7)

99.6

(99.3–99.8)

88.4

(83.5, 92.3)

99.7

(99.3, 99.9)

Status known

         

 Only respondents not self-reporting HIV-positive status

2508

93.4

(89.0–96.5)

99.7

(99.3–99.9)

85.7

(80.3, 90.1)

99.7

(99.4, 99.9)

  1. *Numbers shown relate to Laboratory Reference Standard, data not shown for RDT standard as denominators vary by a maximum of 3 participants. N = 2549 for all participants in the comparison with national RDT diagnostic algorithm