Table 3.

Proportions and Odds Ratios of Referral to Colposcopy, Repeat Screening and Routine Screening in HPV and Cytology Groups, Overall and According to Age

Referral at Baseline	Age	HPV Group n=11,339		Cytology Group n=17,013		OR for HPV versus Cytology Group
						Model 1		Model 2
						(Crude)		(Adjusted*)
		n	(%)	n	(%)	OR	(95% CI)	OR	(95% CI)
New screen due to unsatisfactory test	All	8	(0.1)	117	(0.7)	0.10	(0.05–0.21)	0.11	(0.05–0.22)
	30–39	3	(0.1)	47	(0.8)	0.10	(0.03–0.31)	0.10	(0.03–0.33)
	40–49	3	(0.1)	40	(0.6)	0.11	(0.03–0.35)	0.11	(0.04–0.36)
	50–59	2	(0.1)	30	(0.7)	0.10	(0.03–0.43)	0.11	(0.03–0.44)
Colposcopy	All	436	(3.8)	362	(2.1)	1.84	(1.60–2.12)	1.88	(1.63–2.17)
	30–39	199	(5.3)	182	(3.2)	1.69	(1.37–2.07)	1.73	(1.41–2.13)
	40–49	162	(3.4)	128	(1.8)	1.88	(1.49–2.38)	1.94	(1.53–2.46)
	50–59	75	(2.7)	52	(1.2)	2.27	(1.59–3.25)	2.22	(1.55–3.17)
Repeat screening in 12 months	All	566	(5.0)	30	(0.2)	29.73	(20.58–42.96)	29.85	(20.65–43.14)
	30–39	236	(6.3)	12	(0.2)	31.59	(17.66–56.49)	31.44	(17.56–56.28)
	40–49	227	(4.7)	13	(0.2)	26.79	(15.30–46.91)	27.11	(15.48–47.48)
	50–59	103	(3.7)	5	(0.1)	33.12	(13.48–81.34)	32.78	(13.33–80.63)
Back to routine screening	All	10,329	(91.1)	16,504	(97.0)	0.32	(0.28–0.35)	0.31	(0.27–0.34)
	30–39	3332	(88.4)	5449	(95.8)	0.34	(0.29–0.40)	0.32	(0.28–0.38)
	40–49	4415	(91.8)	6860	(97.4)	0.30	(0.25–0.36)	0.29	(0.24–0.35)
	50–59	2582	(93.5)	4195	(98.0)	0.30	(0.23–0.39)	0.30	(0.23–0.39)

Notes: *Adjusted for age, educational level, country of origin and employment status; 317 women with missing values of adjustment variables excluded from models.

Abbreviations: CI, confidence interval; HPV, human papillomavirus; OR, odds ratio, PPV, positive predictive value.