Event-Specific Risk Factors Predicting Episodes of Unprotected Anal Intercourse with Male Nonregular Partners among Men Who Have Sex with Men Using Case-Crossover Study Design

Table 4

Frequency distributions of environmental/settings variables.

	Episode involving condom use; (i.e., PAI)	Episode involving no condom use; (i.e., UAI)
	(𝑛=215)	(𝑛=215)
	Col %	Col %
Timing and location
Location of the episode
Hong Kong	89.3	90.2
Overseas	10.7	9.8
Happened during a weekend?
Weekend	46.0	32.1
Weekday	54.0	67.9
Hour of the day when it occurred?
Morning/afternoon	32.1	30.2
Evening	67.9	69.8
Did the episode occur at home setting?
Yes (participant or sex partner’s home)	34.4	29.7
No (e.g., hotel, sauna, etc.)	65.5	70.2
Availability of condoms
Were condoms already available at the venue?
Yes	81.9	70.7
Were there free condoms available at the venue?
Yes	60.9	56.7
Were there any notices (e.g., posters) promoting condom use at the venue then?
Yes	49.3	41.4
Were you carrying a condom with him?
Yes	37.2	29.3
Was the sex partner carrying a condom with him?
Yes	23.3	11.6
Physical environment
Was it a dark environment?
Yes	70.2	68.4
Was there a place for shower?
Yes	97.7	96.7
Was the hygiene relatively poor?
Yes	7.0	7.9