Table 4

Association between abnormal anal cytology and socio-demographic and behavioral characteristics of the study participants
Variable Abnormal anal cytology* n/N (%) COR (95% CI)
Age (n=299)
18-24 13/52 (25.0) 1.00
25-29 21/69 (30.4) 1.31 (0.54-3.20)
30-34 17/55 (30.9) 1.34 (0.53-3.42)
35-39 18/58 (31.0) 1.35 (0.54-3.40)
40-44 9/35 (25.7) 1.04 (0.35-3.09)
≥45 11/30 (36.7) 1.74 (0.59-5.13)
Education (n=221)
≤ High-school 33/115 (28.7) 1.00
>High-school 29/106 (27.3) 0.94 (0.50-1.76)
Incomea(n=221)
Low 33/110 (30.0) 1.00
Medium 26/93 (27.9) 0.91 (0.47-1.74)
High 5/18 (27.8) 0.90 (0.23-2.97)
Age at first intercourse with a man (n=221)
≥21 25/80 (31.2) 1.00
16-20 32/106 (30.2) 0.95 (0.48-1.87)
≤15 7/35 (18.9) 0.55 (0.19-1.55)
Lifetime number of male partners (n=213)
1-9 7/26 (26.9) 1.00
10-19 3/23 (13.0) 0.41 (0.06-2.15)
20-49 18/43 (41.9) 1.95 (0.61-6.45)
≥50 33/121 (27.3) 1.02 (0.36-2.96)
Number of sexual partners in previous 6 monthsb(n=230)
≤5 36/126 (28.6) 1.00
6-30 26/88 (29.5) 1.05 (0.55-1.99)
>30 4/16 (25.0) 0.83 (0.18-2.99)
Receptive anal sex in previous 6 monthsb(n=200)
No 12/46 (26.1) 1.00
Yes 41/154 (26.6) 1.03 (0.46-2.33)
Condom use during receptive anal sex (n=155)
Always 35/119 (29.4) 1.00
Sometimes/never 7/36 (19.5) 0.58 (0.21-1.55)
STI historyc(n=232)
No 37/140 (26.4) 1.00
Other than ano-genital wartsd 13/51 (25.5) 0.95 (0.43-2.10)
Ano-genital warts 16/41 (39.0) 1.78 (0.80-3.93)

a Low: <12,000 €; medium: 12,000-24,000 €; high: > 24,000 €.

b During the 6 months preceding the enrollment.

cSTI diagnosed more than 6 months prior to enrollment.

dGenital herpes, syphilis, gonorrhea (any site).

COR= Crude Odds Ratio; CI= Confidence Interval.

*ASC-US+.

Donà et al.

Donà et al. BMC Cancer 2012 12:476   doi:10.1186/1471-2407-12-476

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