Table 1.
Characteristics of 4672 surveyed adult Blued app users in 4 provinces in China.
| Characteristic | Total (N=4672), n (%) | Included in analysis (n=1311), n (%) | Excluded from analysisa (n=3361), n (%) | P value | ||
| Age (years), median (IQR)b | 27 (10) | 27 (10) | 27 (10) | .39 | ||
| Ethnicity: Han Chinese | 4332 (92.7) | 1226 (93.5) | 3106 (92.4) | .19 | ||
| Education: college or above | 2751 (58.9) | 666 (50.8) | 2085 (62.0) | <.001 | ||
| Current employment |
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In the workforce | 3360 (71.9) | 935 (71.3) | 2425 (72.2) | .57 | |
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Student | 952 (20.3) | 234 (17.8) | 718 (21.4) | .007 | |
| Sexual orientation |
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Homosexual | 3330 (71.2) | 993 (75.7) | 2337 (69.5) | <.001 | |
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Bisexual | 1277 (27.3) | 307 (23.4) | 970 (28.9) | <.001 | |
| Substance use in past 6 monthsc | 1611 (34.5) | 661 (50.4) | 950 (28.3) | <.001 | ||
| Self-reported STIsd in past 6 months | ||||||
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Not tested | 3192 (68.3) | 819 (62.5) | 2375 (70.7) | N/Ae | |
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Any STI | 232 (5.0) | 110 (8.4) | 122 (3.6) | <.001 | |
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Syphilis | 126 (2.7) | 65 (5.0) | 61 (1.8) | <.001 | |
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Gonorrhea | 16 (0.3) | 11 (0.8) | 5 (0.1) | .003 | |
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HPVf/genital warts | 99 (2.1) | 36 (2.7) | 63 (1.9) | .50 | |
| Self-reported HIV status |
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Never tested | 1416 (30.3) | 295 (22.5) | 1121 (33.4) | N/A | |
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HIV positive | 406 (8.7) | 160 (12.2) | 246 (7.3) | <.001 | |
aParticipants who reported to never or always have had condom-protected anal sex 6 months prior to the survey collection were excluded from the study analysis because of the case-crossover study design.
bAge distribution was skewed. Wilcoxon Mann-Whitney U test was used to assess the distribution difference by eligibility. Median and IQR were used to characterize the distribution.
cDrugs included rush poppers, methamphetamine, methylenedioxymethamphetamine, gamma-hydroxybutyrate, ketamine, and ecstasy.
dSTIs: sexually transmitted infections.
eN/A: Not applicable.
fHPV: human papillomavirus.