Human papillomavirus (HPV) types 16, 18, 31, 45 DNA loads and HPV-16 integration in persistent and transient infections in young women

Table 2 Means of HPV viral loads according to selected characteristics at the first occurrence of positivity for a given HPV type

	HPV 16			HPV 18			HPV 31			HPV 45
Characteristic*	N	Mean	95% CI	N	Mean	95% CI	N	Mean	95% CI	N	Mean	95% CI
Age
<25 years	72	0.47	0.19-1.19	32	0.93	0.18-4.96	31	2.07	0.54-7.97	14	0.26	0.03-2.62
25+ years	31	0.21	0.05-1.01	11	0.08	0.03-0.46	5	0.45	0.04-5.33	5	0.09	0.01-8.02
Coinfection, other HPVs
None #	10	0.17	0.02-1.24	5	0.05	0.01-0.25	4	1.88	0.10-35.6	3	0.09	0.01-8.03
Sequential	56	0.56	0.18-1.70	21	1.61	0.14-18.18	17	1.29	0.12-14.1	8	0.06	0.00-3.37
Concurrent	38	0.25	0.06-0.93	17	0.62	0.05-7.09	15	1.76	0.29-10.9	8	0.41	0.00-18.58
Smoking
Never	60	0.34	0.11-1.04	23	0.16	0.02-1.05	22	0.66	0.09-4.49	11	0.17	0.03-8.28
Current	25	0.79	0.21-2.91	15	1.29	0.18-9.36	8	1.80	0.38-8.56	3	0.32	0.05-2.46
Former	18	0.13	0.02-1.07	5	3.86	0.04-37.47	6	21.87	2.26-211.3	5	0.17	0.03-11.18
Condom use
No	15	0.09	0.01-1.05	10	0.72	0.01-44.43	4	0.49	0.02-122.	3	0.03	0.003-2.48
Used sometimes	44	0.78	0.21-2.82	17	0.35	0.04-3.34	13	6.09	0.70-53.1	12	0.33	0.02-6.19
Regular use	39	0.51	0.17-1.48	15	0.72	0.08-6.92	16	1.01	0.15-6.68	5	0.22	0.02-16.23
Oral contraceptive use
No	23	0.28	0.04-1.80	13	0.22	0.02-2.18	10	0.51	0.04-2.09	7	0.13	0.01-1.57
Infrequent	63	0.42	0.16-1.08	25	0.69	0.13-3.65	21	0.91	0.19-4.34	10	0.46	0.02-9.44
Regular	7	1.10	0.18-67.6	4	1.92	1.3-3.82	4	7.4	2.08-26.7	2	0.98	0.01-54.21
Sexual partners
One	5	0.05	0.01-6.12	5	0.02	0.04-9.03	2	0.80	0.03-205.	5	0.06	0.01-3.60
2-3	24	0.72	0.16-3.16	7	2.30	0.04-146.1	13	3.32	0.31-34.9	2	0.06	0.005-6.57
4+	75	0.34	0.14-0.90	31	0.59	0.13-2.62	21	1.09	0.23-5.04	12	0.41	0.03-5.61

* Defined at the time of first occurrence of positivity for the stated HPV type.
# Concurrent coinfection defined as the detection of more than one HPV type in the cervical cell specimen collected at the first visit when the stated type was found. Sequential coinfection defined as additional HPV types detected at different visits than the one when the stated type was found.

ISSN: 1471-2334