Adjusted rate ratios for all included exposures, for each sub-group
| Exposure | Main sample (n=1966) | Subgroup 1 (n=1122) | Subgroup 2 (n=879) | Subgroup 3 (n=719) |
|---|---|---|---|---|
| Age group (years) | p=0.06 | p=0.005 | p=0.02 | p=0.13 |
| <25 | Ref | Ref | Ref | Ref |
| 25–34 | 1.42 (1.02 to 1.97) | 1.21 (0.85 to 1.72) | 1.07 (0.77 to 1.50) | 1.05 (0.70 to 1.55) |
| 35–44 | 1.18 (0.84 to 1.66) | 0.95 (0.67 to 1.33) | 0.89 (0.63 to 1.24) | 0.86 (0.58 to 1.27) |
| 45–54 | 1.16 (0.82 to 1.64) | 0.87 (0.62 to 1.23) | 0.82 (0.58 to 1.14) | 0.83 (0.56 to 1.22) |
| 55+ | 1.02 (0.69 to 1.50) | 0.73 (0.50 to 1.05) | 0.71 (0.49 to 1.02) | 0.73 (0.48 to 1.12) |
| SHA of residence | p=0.01 | p=0.0009 | p=0.32 | p=0.45 |
| London | Ref | Ref | Ref | Ref |
| South West | 0.84 (0.65 to 1.10) | 0.82 (0.61 to 1.09) | 0.92 (0.71 to 1.20) | 0.91 (0.68 to 1.22) |
| South Central | 0.79 (0.58 to 1.06) | 0.62 (0.44 to 0.86) | 0.84 (0.61 to 1.16) | 0.91 (0.66 to 1.27) |
| South East Coast | 0.66 (0.50 to 0.87) | 0.70 (0.52 to 0.95) | 0.83 (0.63 to 1.09) | 0.82 (0.61 to 1.10) |
| East of England | 0.83 (0.63 to 1.11) | 0.92 (0.67 to 1.25) | 1.22 (0.93 to 1.59) | 1.26 (0.92 to 1.74) |
| East Midlands | 0.56 (0.40 to 0.78) | 0.50 (0.34 to 0.73) | 0.88 (0.62 to 1.25) | 0.89 (0.60 to 1.32) |
| West Midlands | 0.68 (0.49 to 0.93) | 0.57 (0.39 to 0.84) | 0.78 (0.54 to 1.11) | 0.75 (0.50 to 1.12) |
| Yorkshire & Humber | 0.70 (0.51 to 0.95) | 0.72 (0.51 to 1.03) | 0.95 (0.67 to 1.36) | 0.92 (0.63 to 1.34) |
| North West | 0.89 (0.69 to 1.14) | 0.96 (0.74 to 1.26) | 1.14 (0.89 to 1.46) | 1.12 (0.86 to 1.47) |
| North East | 0.77 (0.50 to 1.18) | 0.67 (0.41 to 1.10) | 0.89 (0.56 to 1.42) | 0.88 (0.52 to 1.47) |
| Relationship status | p=0.03 | p=0.03 | p=0.38 | p=0.70 |
| Single | Ref | Ref | Ref | Ref |
| With one man only | 0.81 (0.65 to 1.01) | 0.79 (0.67 to 0.93) | 0.93 (0.79 to 1.08) | 0.96 (0.81 to 1.13) |
| With 2+ men but no women | 1.36 (0.93 to 1.99) | 1.17 (0.77 to 1.78) | 1.04 (0.74 to 1.46) | 1.02 (0.70 to 1.47) |
| With one or more women | 0.89 (0.60 to 1.31) | 1.02 (0.69 to 1.52) | 1.27 (0.88 to 1.84) | 1.24 (0.82 to 1.87) |
| ‘I Did It’ press advertisement | p=0.08 | p=0.22 | p=0.45 | |
| Not seen advertisement | – | Ref | Ref | Ref |
| Recognised, or had seen & read, advertisement | – | 1.29 (0.97 to 1.70) | 1.16 (0.92 to 1.46) | 1.11 (0.85 to 1.45) |
| Lifetime sexual partners | p=0.32 | p=0.27 | ||
| ≤20 | – | – | Ref | Ref |
| 21–50 | – | – | 0.92 (0.71 to 1.17) | 0.84 (0.64 to 1.11) |
| 51–100 | – | – | 0.85 (0.66 to 1.11) | 0.82 (0.62 to 1.10) |
| 101–250 | – | – | 0.91 (0.69 to 1.19) | 0.85 (0.63 to 1.15) |
| 251–500 | – | – | 0.72 (0.54 to 0.96) | 0.68 (0.49 to 0.92) |
| 500+ | – | – | 0.87 (0.65 to 1.17) | 0.83 (0.60 to 1.15) |
| Monthly average casual sexual partners | p<0.0001 | p<0.0001 | ||
| <1 | – | – | Ref | Ref |
| 1–2 | – | – | 1.40 (1.16 to 1.70) | 1.45 (1.17 to 1.80) |
| >2 | – | – | 1.77 (1.42 to 2.20) | 1.84 (1.44 to 2.34) |
| Last HIV test before survey enrolment | p<0.0001 | p<0.0001 | ||
| Never tested | – | – | Ref | Ref |
| >12 months before enrolment | – | – | 1.46 (1.04 to 2.05) | 1.44 (1.00 to 2.07) |
| 6–12 months before enrolment | – | – | 2.84 (2.03 to 3.97) | 2.56 (1.77 to 3.68) |
| 1–6 months before enrolment | – | – | 3.83 (2.84 to 5.17) | 3.71 (2.67 to 5.15) |
| <1 month before enrolment | – | – | 7.75 (5.70 to 10.55) | 7.24 (5.17 to 10.15) |
| ‘Clever Dick/Smart Arse’ press advertisements | p=0.52 | |||
| No awareness of advertisements | – | – | – | Ref |
| Any awareness of advertisements | – | – | – | 1.06 (0.89 to 1.26) |
| ‘Count Me In’ intervention | p=0.50 | |||
| No awareness of intervention | – | – | – | Ref |
| Any awareness of intervention | – | – | – | 1.06 (0.89 to 1.27) |
| Time period of testing | p=0.25 | |||
| 1 January 2011—30 April 2011 | – | – | – | Ref |
| 1 May 2011—30 September 2011 | – | – | – | 0.94 (0.80 to 1.11) |
| 1 October 2011—31 January 2013 | – | – | – | 1.08 (0.92 to 1.27) |
SHA, strategic health authorities.