Table 1

Baseline sociodemographic and behavioural characteristics of the 244 MSM included in the longitudinal cohort, overall and stratified according to HIV status

Overall
n=244
HIV-infected
n=103
HIV-uninfected
n=141
P value*
n%n%n%
Age (years)0.289
 <367932.42827.25136.2
 36–468534.83735.94834.0
 >468032.83836.94229.8
Education 0.024
 Undergraduate13153.76462.16747.5
 Postgraduate11346.33937.97452.5
Annual income (euros)0.27
 <12 0009438.53635.05841.1
 12 000–24 00012149.65149.57049.7
 >24 0002911.91615.5139.2
Smoking status0.173
 Current smoker9538.94644.74934.8
 Former smoker3514.31615.51913.5
 Non-smoker11446.84139.87351.7
Alcohol consumption0.463
 Heavy52.011.042.8
 Light/moderate7832.03130.14733.4
 No16166.07168.99063.8
Number of lifetime partners (any sex)0.544
 <507832.03029.14834.0
 50–1006928.32827.24129.1
 >1009739.74543.75236.9
Number of recent partners (any sex)† <0.0001
 <38133.25553.42618.4
 3–88133.22322.35841.2
 >88233.62524.35740.4
Occasional partners (any sex) <0.0001
 No3213.12524.375.0
 Yes21286.97875.713495.0
Number of lifetime partners (receptive oral sex)0.092
 <5010743.83735.97049.7
 50–1006928.33231.13726.2
 >1006827.93433.03424.1
Recent receptive oral sex† 0.010
No229.01514.675.0
Yes22291.08885.413495.0
Number of recent partners (receptive oral sex)‡ 0.003
 <38437.84551.13929.1
 3–88136.52730.75440.3
 >85725.71618.24130.6
Occasional partners for recent receptive oral sex‡ <0.001
 No3716.72427.3139.7
 Yes18583.36472.712190.3
Condom use during recent receptive oral sex‡0.171
 Always83.655.732.2
 Not always21496.48394.313197.8
STI history§ 0.008
 No6426.21817.54632.6
 Yes18073.88582.59567.4
Anogenital wart history§0.263
 No15965.26361.29668.1
 Yes8534.84038.84531.9
Tonsillectomy0.316
 No19479.18582.510977.3
 Yes5020.91817.53322.7
Oral care/condition¶0.332
 Good18375.07471.810977.3
 Poor6125.02928.23222.7
Oral health/hygiene**0.066
 Good/very good13053.34644.68459.6
 Fair/poor/very poor10543.05250.55337.6
 Missing93.754.942.8
  • p values for significant differences between the two study groups are indicated in bold.

  • 2 test for the comparison between HIV-uninfected and HIV-infected MSM.

  • †During the 6 months previous the enrolment.

  • ‡For the subjects who reported receptive oral sex in the previous 6 months.

  • §Diagnosed at least 6 months prior to enrolment (anogenital warts, syphilis, gonorrhoeae in any site, genital herpes and chlamydia)

  • ¶Self-reported and classified on the basis of the answers to six questions concerning oral care and conditions, as specified in the Methods section and in online supplementary appendix 1.

  • **Ascertained by the otolaryngologist during a full examination of the oral cavity, as detailed in the Methods section and in online supplementary appendix 1.