Table 1

Selected socio-demographic and behavioral characteristics of the study participants
CHARACTERISTIC
Age, median (IQR), years (n=346) 32 (27-39)
Ethnicity (%) (n=346)
 Caucasian 97.1
 Hispanic 2.6
 Asiatic 0.3
Education (%) (n=250)
 high-school or less 52.4
 university or more 47.6
Annual incomea (%) (n=251)
 low 48.2
 medium 42.6
 high 9.2
Age at first intercourse with a man, median (IQR), years (n=254) 19 (17-23)
N. lifetime male sex partners, median (IQR) (n=245) 50 (20-200)
N. male sex partners in previous 6 monthsb, median (IQR) (n=264) 5 (2-10)
Partnership in previous 6 monthsb (%) (n=264)
 steady partner only 14.0
 steady and casual partners 23.9
 casual partners only 62.1
Anal sex practices in previous 6 monthsb (%) (n=227)
 insertive only 25.1
 receptive only 8.8
 receptive and insertive 66.1
Condom use during receptive intercourse in previous 6 monthsb (%) (n=170)
 always 77.6
 more than half times 15.9
 up to half times 2.9
 never 3.5
STI historyc (%) (n=264)
 No 59.1
 Yesd 40.9
  Genital herpes 4.6
  Syphilis 31.5
  Gonorrhea (any site) 35.2
  Ano-genital warts 46.3

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

b During the 6 months preceding the enrollment.

c STI diagnosed more than 6 months prior to enrollment.

d Proportions of MSM with a specific STI were calculated as a percentage of the individuals with an STI history only; total sum of the percentages of patients with an STI history exceeds 100% due to patients with more than one STI.

Abbreviations: IQR, interquartile range; STI, sexually transmitted infections.

Donà et al.

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

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