Table 3.

Negative Predictive Values for Precancer Among All Women and Women of Various Ages After One or More Consecutive Pap Test Results and Varying Follow-up Intervals, Stratified by Human Immunodeficiency Virus Serostatus

		All Women			HIV+		HIV−
	Age (years)	n	15 mo	39mo	15mo	39mo	15mo	39mo
Number of initial negative Pap results
1		1462	99.2 (98.7, 99.6)	96.4 (95.5, 97.4)	99.2 (98.6, 99.7)	95.8 (94.5, 97.0)	99.2 (98.5, 100)	97.7 (96.4, 99.0)
3		867	99.9 (99.7, 100)	98.5 (97.7, 99.3)	100	98.1 (97.0, 99.3)	99.7 (99.1, 100)	99.1 (98.1, 100)
10		331	100	100	100	100	100	100
One negative Pap
	Younger than 31	498	99.2 (98.4, 100)	95.8 (94.0, 97.6)	98.9 (97.6, 100)	95.1 (92.5, 97.7)	99.6 (98.7, 100)	96.6 (94.2, 98.9)
	31–45	824	99.0 (98.4, 99.7)	96.6 (95.4, 97.8)	99.1 (98.4, 99.9)	95.8 (94.1, 97.4)	98.8 (97.5, 100)	98.4 (96.9, 100)
	Older than 45	139	100	97.8 (95.4, 100)	100	97.2 (94.0, 100)	100	100
Three negative Paps
	Younger than 31	241	100	98.3 (96.7, 100)	100	98.3 (96.0, 100)	100	98.4 (96.1, 100)
	31–45	519	99.8 (99.4, 100)	98.5 (97.4, 99.5)	100	97.9 (96.4, 99.5)	99.5 (98.4, 100)	99.5 (98.4, 100)
	Older than 45	107	100	99.1 (97.2, 100)	100	98.8 (96.4, 100)	100	100
10 negative Paps
	Younger than 31	48	100	100	100	100	100	100
	31–45	217	100	100	100	100	100	100
	Older than 45	66	100	100	100	100	100	100

Data are % (95% CI) unless otherwise specified.

HIV, human immunodeficiency virus.