Table 3.

Cervical cancer cases, cancer stages, and deaths among cancers detected after negative screening tests

Groups	Controls	Cytology	HPV
No. of eligible patients	31,488	32,058	34,126
Assigned but not screened	NA	6509	6934
Ca diagnosed in women with negative screening test results	NA	22	8
Stage IA	NA	2/22 (9.1%)	0/8 (0%)
Stage IB	NA	4/22 (18.2%)	2/8 (25.0%)
Stage II+	NA	15/22 (68.2%)	5/8 (62.5%)
Stage unknown	NA	1/22 (4.5%)	1/8 (12.5%)
Deaths among Ca diagnosed in women with negative screening test results	NA	9/22 (40.9%)	0/8 (0%)
Ca detected among controls	118
Ca deaths among controls	64