Table 1

Comparing the men in SCS and PASH, and their CLAIC* events

 SCS†PASH‡Univariate analysis Multivariate analysis
(N=168)
n (%)
(N=194)
n (%)
ORp ValueaORp Value
Characteristics of the men
 Age mean (SD)33.3 (8.47)35.0 (10.2)0.98 (0.96 to 1.00)0.091
 University educated89 (53.0)99 (51.0)1.08 (0.72 to 1.64)0.712
 Anglo-Australian background135 (80.4)123 (63.4)2.36 (1.46 to 3.82)<0.001
 In regular relationship at the time56 (33.3)79 (40.7)0.73 (0.47 to 1.12)0.148
Characteristics of CLAIC* partner
 Had met this partner previously54 (32.1)115 (59.3)0.33 (0.21 to 0.50)<0.0010.50 (0.31 to 0.83)0.007
 Believed partner to be HIV-negative48 (28.6)133 (70.1)0.17 (0.11 to 0.27)<0.0010.27 (0.16 to 0.49)<0.001
Features of the CLAIC* event
 Occurred in participant's home34 (20.2)74 (38.1)0.41 (0.26 to 0.66)<0.001
 Was a group sex event62 (36.9)17 (8.8)6.09 (3.38 to 10.97)<0.0013.79 (2.00 to 7.23)<0.001
 Insertives CLAIC* only25 (14.9)67 (34.5)0.33 (0.20 to 0.56)<0.0010.30 (0.16 to 0.54)<0.001
  • *Condomless anal intercourse with a casual partner.

  • †The men in the SCS who described an occasion of condomless anal intercourse with a casual partner as the high-risk event that led to their infection with HIV.

  • ‡The HIV-negative gay men in the PASH study who described a recent occasion of condomless anal intercourse with a casual partner.

  • aOR, adjusted OR; CLAIC, condomless anal intercourse with casual partners; PASH, Pleasure and Sexual Health study; SCS, Seroconversion Study.