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Table 1 Distribution of characteristics and model results for the number of casual male partners in the prior 12 months

From: Number of casual male sexual partners and associated factors among men who have sex with men: Results from the National HIV Behavioral Surveillance system

Characteristic n estimated median number
of casual partners (95% CI)
% change p-value *
Race/ethnicity     < .0001
   White, not Hispanic 5214 (47) 3.7 (3.6, 3.9) ref.  
   Black, not Hispanic 2009 (18) 2.9 (2.7, 3.1) - 23%  
   Hispanic 2890 (26) 3.2 (3.0, 3.4) - 14%  
   Other § 1078 (10) 3.3 (3.0, 3.5) - 13%  
Age     < .0001
   18 - 24 2178 (19) 2.8 (2.7, 3.0) - 21%  
   25 - 34 3715 (33) 3.5 (3.3, 3.6) - 4%  
   34 - 44 3549 (32) 3.6 (3.5, 3.8) ref.  
   45 - 54 1337 (12) 3.4 (3.1, 3.7) - 6%  
   > = 55 412 (4) 3.6 (3.1, 4.1) - 1%  
Sexual identity     < .0001
   Homosexual 9388 (84) 3.6 (3.5, 3.7) ref.  
   Heterosexual 127 (1) 1.2 (0.8, 1.7) - 66%  
   Bisexual 1582 (14) 2.5 (2.3, 2.7) - 31%  
   Other 94 (1) 2.7 (2.0, 3.5) - 26%  
HIV status ||     < .0001
   Negative 8720 (78) 3.3 (3.2, 3.4) ref.  
   Positive 1414 (13) 4.1 (3.8, 4.4) + 23%  
   Untested/unknown 1057 (9) 3.0 (2.7, 3.3) - 10%  
Education     0.29
   Less than high school 611 (5) 3.1 (2.8, 3.5) - 9%  
   High school diploma or equivalent 1911 (17) 3.3 (3.1, 3.5) - 2%  
   More than high school 8669 (77) 3.4 (3.3, 3.5) ref.  
Main male sex partners    < .0001
   None 3595 (32) 6.5 (6.3, 6.8) ref.  
   > = 1 7596 (68) 2.4 (2.3, 2.5) - 63%  
Male exchange sex partners    < .0001
   No 10388(93) 3.1 (3.0, 3.2) ref.  
   > = 1 803 (7) 8.6 (7.8, 9.3) + 174%  
Female sex partners    0.005
   None 9697 (87) 3.3 (3.2, 3.4) ref.  
   > = 1 1494 (13) 3.8 (3.5, 4.2) + 15%  
Gone into gay or bisexual chat rooms    < .0001
   Didn't use 6059 (54) 2.6 (2.5, 2.7) ref.  
   Once a month or less 1786 (16) 3.3 (3.1, 3.5) + 24%  
   About once a week 1044 (9) 4.2 (3.9, 4.6) + 61%  
   Several times a week 1167 (10) 5.3 (4.9, 5.7) + 102%  
   About once a day 744 (7) 6.3 (5.7, 6.8) + 138%  
   Several times a day 391 (3) 6.3 (5.6, 7.1) + 140%  
Injection drug use    < .0001
   No 10921 (98) 3.3 (3.3, 3.4) ref.  
   Yes 270 (2) 5.3 (4.6, 6.2) + 60%  
Non-injection drug use    < .0001
   No 6188 (55) 2.7 (2.6, 2.8) ref.  
   Yes 5003 (45) 4.3 (4.2, 4.5) + 59%  
  1. * p-value is for significance of the model coefficient(s)
  2. † Model-based estimated geometric mean number of partners
  3. ‡ Calculated from the ratio of geometric mean number of partners
  4. § "Other" includes Asian/Pacific Islander, American Indian/Alaskan Native, multiracial men, men who specified other racial descriptions, and men who declined to report their race.
  5. || Self-reported
  6. ¶ In the 12 months before the interview