Associations between intending to share details of every sexual contact in the last 7 days and sociodemographic characteristics and motivational message, by sample
| Participant characteristics | Level | General population | Grindr | ||
| B (95% CI) | P value | B (95% CI) | P value | ||
| Gender | Male (including transman) | Ref | – | – | – |
| Female (including transwoman) | 0.16 (0.07 to 0.24) | <0.001* | – | – | |
| Sexual orientation | Straight or heterosexual | Ref | – | – | – |
| Gay, lesbian, bisexual or queer | 0.12 (-0.05 to 0.28) | 0.16 | – | – | |
| Age | Range 18–98 years | 0.008 (0.005 to 0.011) | <0.001* | 0.003 (−0.005 to 0.011) | 0.46 |
| Quadratic term (age–mean)2 | 0.00017 (−0.00034 to −0.00001) | 0.04 | 0.0003 (−0.0002 to 0.0008) | 0.19 | |
| Region | Midlands (East and West) | Ref | – | Ref | – |
| South (East, West, East of England) | 0.04 (−0.16 to 0.08) | 0.50 | 0.08 (−0.23 to 0.39) | 0.60 | |
| North (East, West, Yorkshire and the Humber) | 0.07 (−0.19 to 0.06) | 0.29 | 0.31 (−0.05 to 0.68) | 0.09 | |
| London | 0.05 (−0.11 to 0.22) | 0.53 | 0.12 (−0.25 to 0.49) | 0.52 | |
| Devolved nations (Scotland, Wales and Northern Ireland) | 0.09 (−0.06 to 0.25) | 0.24 | 0.26 (0.21 to 0.73) | 0.27 | |
| Dependent child in household | No | Ref | – | Ref | – |
| Yes | 0.12 (−0.22 to −0.01) | 0.03 | 0.22 (−0.64 to 0.20) | 0.30 | |
| Employment status | Not working | Ref | – | Ref | – |
| Working | 0.10 (−0.20 to 0.00) | 0.05 | 0.01 (−0.26 to 0.23) | 0.90 | |
| Frontline health or social care worker | No | Ref | – | Ref | – |
| Yes | 0.04 (−0.17 to 0.09) | 0.57 | 0.08 (−0.19 to 0.34) | 0.57 | |
| Education | GCSE/vocational/A-level/No formal qualifications | Ref | – | Ref | – |
| Degree or higher (Bachelors, Masters, PhD) | 0.00 (−0.09 to 0.09) | 0.97 | 0.13 (−0.06 to 0.32) | 0.19 | |
| Ethnicity | White British | Ref | – | Ref | – |
| White other | 0.29 (−0.51 to −0.08) | 0.008 | 0.00 (−0.25 to 0.25) | 0.98 | |
| Black, Asian, other minoritised ethnicity | 0.17 (−0.32 to −0.01) | 0.03 | 0.01 (−0.29 to 0.30) | 0.97 | |
| Marital status | Not partnered | Ref | – | Ref | – |
| Partnered | 0.03 (−0.08 to 0.15) | 0.55 | 0.10 (−0.11 to 0.32) | 0.35 | |
| Live alone | Live with someone else | Ref | – | Ref | – |
| Live alone | 0.04 (−0.17 to 0.08) | 0.50 | 0.21 (0.01 to 0.40) | 0.04 | |
| Own chronic illness | None | Ref | – | Ref | – |
| Present | 0.04 (−0.14 to 0.05) | 0.40 | 0.31 (0.11 to 0.51) | 0.003 | |
| Ever taken PrEP for HIV | No | – | – | Ref | – |
| Yes | – | – | 0.09 (−0.10 to 0.28) | 0.35 | |
| Vaccinated for smallpox in 2022 | Not vaccinated | – | – | Ref | – |
| Vaccinated | – | – | 0.07 (−0.28 to 0.14) | 0.50 | |
| Index of Multiple Deprivation | Deciles (1st=most deprived, 10th=least deprived) | 0.00 (−0.02 to 0.02) | 0.87 | 0.03 (−0.02 to 0.08) | 0.19 |
| Socioeconomic grade | ABC1 | Ref | – | Ref | – |
| C2DE | 0.12 (−0.21 to −0.03) | 0.01 | 0.04 (−0.22 to 0.29) | 0.78 | |
| Financial hardship | 4 (lowest hardship) to 13 (most hardship) | 0.05 (−0.07 to −0.03) | <0.001* | 0.02 (−0.07 to 0.04) | 0.53 |
| Total no of sexual partners (male and female) in last 3 weeks | 0 | Ref | – | – | – |
| 1 | 0.06 (−0.05 to 0.17) | 0.28 | – | – | |
| 2–4 | 0.07 (−0.14 to 0.27) | 0.53 | – | – | |
| 5 or more | 0.09 (−0.45 to 0.28) | 0.64 | – | – | |
| Prefer not to say | 0.37 (−0.49 to −0.24) | <0.001* | – | – | |
| No of male sexual partners in last 3 weeks | 0 | – | – | Ref | – |
| 1 | – | – | 0.02 (−0.27 to 0.22) | 0.84 | |
| 2–4 | – | – | 0.02 (−0.24 to 0.21) | 0.90 | |
| 5–9 | – | – | 0.08 (−0.38 to 0.23) | 0.62 | |
| 10 or more | – | – | 0.58 (−0.96 to −0.20) | 0.003 | |
| Prefer not to say | – | – | 0.09 (−0.52 to 0.34) | 0.67 | |
| Motivational message | Perceived risk of illness and necessity and efficacy of the response | 0.03 (−0.15 to 0.08) | 0.55 | – | – |
| Perceived risk of illness and benefits of the response | 0.03 (−0.08 to 0.14) | 0.59 | – | – | |
| Perceived risk of illness and low perceived costs of response | 0.01 (−0.12 to 0.10) | 0.86 | – | – | |
| Control | Ref | – | – | – | |
| Motivational message | All motivational components | – | – | 0.06 (−0.23 to 0.10) | 0.45 |
| Control | – | – | Ref | – | |
A higher score indicates greater intention to share details. Variables were entered into the linear regression model in blocks (block 1: sociodemographic variables and motivational message, block 2: psychological factors). Results for block 2, using pooled estimates are reported.
*p≤0.001.
GCSE, General Certificate of Secondary Education; PrEP, pre-exposure prophylaxis.