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Table 2 Demographic characteristics of index cases compared with contacts (both sexual and social)

From: Giving syphilis and gonorrhea to friends: using in-person friendship networks to find additional cases of gonorrhea and syphilis

  Index cases (%) (n = 354) Contacts (%) (n = 172) P-value
Male 72.0 50.0 < 0.001
Age: under 18 3.7 2.3 0.4
Age 18–24 years 30.8 20.4 0.01
Age 25–34 years 22.0 19.2 0.5
Age 35–44 years 31.6 31.4 1.0
Age 45–60 years 11.9 26.7 < 0.001
Straight-identified 82.5 92.4 0.002
MSM (among men) 14.2 2.6 0.006
WSM (among women) 99.0 95.7 0.2
Ever married 21.8 31.4 0.02
Employed full-time 38.9 25.4 0.002
Black or African-American 92.1 97.1 0.03
High school graduate 62.4 59.9 0.6
Imprisoned in past 10 years 35.3 36.6 0.8
Imprisoned in past 6 months 9.0 5.8 0.2
Injected drugs in past 10 years 12.7 18.6 0.07
Injected drugs in past 6 months 4.8 7.0 0.3
  1. Percentages are percent of column. P-value is from a chi-square test and reported to 1 significant digit