Nitrite Inhalants Use and HIV Infection among Men Who Have Sex with Men in China
Table 1
Demographic and nitrite inhalants use characteristics of men who have sex with men (MSM) in Beijing, 2012 ().
Characteristics
%
Age
Mean (SD)
30.0 (7.1)
Median (, )
29 (25, 33)
Range
19–63
Age
<25 years
82
20.5
≥25 years
318
79.5
Ethnicity
Han
374
93.5
Other
26
6.5
Married
Yes (married, cohabiting, or divorced)
105
26.3
No
295
73.7
Years of schooling
12
142
35.5
12 (college and above)
258
64.5
Residency permit
Beijing
127
31.8
Other
273
68.2
Monthly income
3000 (CNY, 485USD)*
143
35.8
3000
257
64.2
Sexual orientation
Homosexual
286
71.5
1Other
114
28.5
Ever used nitrite inhalants
Yes
189
47.3
No
211
52.8
Venue for seeking a male sex partner
Internet
288
72
Other (park, bathroom)
112
28
Nitrite inhalants use in P12M
Yes
167
41.8
No
17
4.3
Frequency of sex when using nitrite inhalants
Never
3
0.8
Rarely
56
14
Sometimes
15
3.8
Every time
115
28.8
Having unprotected anal sex in last month
Yes
90
22.5
No
135
33.8
Having unprotected anal sex in P3M
Yes
107
26.8
No
133
33.3
Having casual sex partner in P3M
Yes
261
65.3
No
139
34.7
Characteristics
%
Sources of nitrite inhalants
Internet
49
12.3
Friends
114
28.5
Other sources
26
6.5
Number of sexual partners while using nitrite inhalants
2
162
40.5
2
18
4.5
Number of change of sexual partners since starting to use nitrite inhalants
Increased
14
3.5
Decreased
7
1.8
No change
151
37.8
Not sure
17
4.3
Sexual role played when having anal sex and using nitrite inhalants
Exclusive/mainly insertive
89
22.3
Exclusive/mainly receptive
74
18.5
Both, about the same
26
6.5
Nitrite inhalant use increases sexual pleasure
Yes
144
36.0
No
45
11.3
Duration of sexual activity when using nitrite inhalants
Longer
53
13.3
Shorter
14
3.5
Same
99
24.8
Frequency of condom use since starting use of nitrite inhalants
Never use
14
3.5
Sometimes use, more frequently than before
10
2.5
Sometimes use, less frequently than before
16
4.0
Almost the same
48
12.0
Consistent condom use
101
25.3
Having multiple sex partners
Yes
218
54.5
No
145
36.3
Number of casual partners in P3M
1
88
22.0
2–5
87
21.8
5
14
3.5
Having intentional protected anal sex with casual sex partners in F3M
Yes
180
45.0
No
220
55.0
Having intentional protected anal sex with regular sex partners in F3M
Yes
176
44.0
No
224
56.0
HIV serostatus
Positive
24
6.0
Negative
376
94.0
Syphilis serostatus
Positive
91
22.8
Negative
309
77.2
Note: *exchange rate 6.15–6.2 : 1 (CNY to USD); 1other = heterosexual, or bisexual, or unknown; P12M: the past 12 months; P3M: the past 3 months. Numbers might not add to totals due to missing data; F3M: the future 3 months.
