Table 5. Follow up histology results for women with at least one follow up by histology at baseline.

	Histology at baseline
Follow up results	No Biopsy	Negative	CIN1	Total
	N (row%) (col%)	N (row%) (col%)	N (row%) (col%)	N (row%) (col%)
Total	89 (25.7) (100)	66 (19.0) (100)	192 (55.3) (100)	347 (100) (100)
No biopsy	79	57	144	280
	(88.8)	(86.3)	(75.0)	(80.7)
CIN1	9	5	46	60
	(10.1)	(7.6)	(24.0)	(17.3)
CIN2+	1	4	2	7
	(1.1)	(6.1)	(1.0)	(2.0)
Absolute risk *	5.0	26.3	5.1	6.7
95%CI	0.1–27	7–66	0.6–18	2–16

^*CIN2+/1,000 person/years.