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. 2015 Apr 17;1(1):e3. doi: 10.2196/publichealth.4314

Table 3.

Sexual Behaviors with Male Partners of MSM Participants in the American Men's Internet Survey, United States, 2013.

Participant characteristics n in sample Anal intercourse without a condom in the past 12 months Anal intercourse without a condom with last sex partner of discordant or unknown HIV status
n (%) P valuea n (%) P valuea
HIV-positive overall 1113 804 (72.24) <.001b 478 (42.95) <.001b

Race/Ethnicity








Black, non-Hispanic 63 46 (73.02) .580 21 (33.33) .009


Hispanic 162 110 (67.90) .032 74 (45.68) .780


White, non-Hispanic 810 590 (72.84) REF 343 (42.35) REF


Other or multiple races 78 58 (74.36) .335 40 (51.28) .027

Age (years)


18-24 90 78 (86.67) .060 56 (62.22) .033


25-29 124 104 (83.87) .085 66 (53.23) .504


30-39 201 148 (73.63) .041 94 (46.77) .244


40 or older 698 474 (67.91) REF 262 (37.54) REF

NHBS city residentc








Yes 311 232 (74.60) .016 119 (38.26) .793


No 802 572 (71.32) REF 359 (44.76) REF

Recruitment website type








Gay social networking 50 35 (70.00) .987 25 (50.00) .122


General gay interest 155 103 (66.45) .139 57 (36.77) .108


General social networking 439 291 (66.29) REF 139 (31.66) REF


Geospatial social networking 469 375 (79.96) .001 257 (54.80) .002
HIV-negative or unknown overall 9264 5673 (61.24) REF 1262 (13.62) REF

Race/Ethnicity








Black, non-Hispanic 291 179 (61.51) .297 55 (18.90) .578


Hispanic 922 592 (64.21) .934 183 (19.85) .125


White, non-Hispanic 7266 4408 (60.67) REF 901 (12.40) REF


Other or multiple races 785 494 (62.93) .651 123 (15.67) .998

Age (years)








18-24 1892 1217 (64.32) .813 323 (17.07) .001


25-29 1391 937 (67.36) .019 193 (13.87) .157


30-39 1717 1218 (70.94) <.001 241 (14.04) .613


40 or older 4264 2301 (53.96) REF 505 (11.84) REF

NHBS city residentc








Yes 2957 1784 (60.33) .596 370 (12.51) .737


No 6307 3889 (61.66) REF 892 (14.14) REF

Recruitment website type








Gay social networking 752 365 (48.54) <.001 95 (12.63) .275


General gay interest 1803 1113 (61.73) .134 205 (11.37) .002


General social networking 4897 2926 (59.75) REF 533 (10.88) REF


Geospatial social networking 1812 1269 (70.03) <.001 429 (23.68) <.001

a Wald chi-square from multivariable logistic regression comparing behavior (yes versus no) among group with some characteristic compared to a referent (REF) group.

b Wald chi-square from multivariable logistic regression comparing behavior (yes versus no) among HIV-positive participants compared to HIV-negative or unknown serostatus particiants. Model controlled for race/ethnicity, age, NHBS residency, and website type.

c NHBS = National HIV Behavioral Surveillance System