Risk ratios (RR) and adjusted risk ratios (aRR) of being tested for Chlamydia trachomatis with the Chlamyweb randomised controlled trial compared with classic information (control) in men. France, 2012
| Control | Intervention | RR univ. | aRR multiv. | CI 95% | |||
|---|---|---|---|---|---|---|---|
| n/N | Per cent | n/N | Per cent | ||||
| Total | 136/2579 | 5.3 | 614/2573 | 23.9 | 4.53 | 4.55 | (3.77 to 5.49) |
| Age (years) | |||||||
| 18–19 | 38/810 | 4.7 | 148/782 | 18.9 | 4.03 | 4.02 | (2.80 to 5.78) |
| 20–21 | 41/797 | 5.1 | 204/819 | 24.9 | 4.84 | 4.98 | (3.54 to 6.99) |
| 22–24 | 57/972 | 5.9 | 262/972 | 27.0 | 4.60 | 4.58 | (3.43 to 6.12) |
| p Value | 0.53 | <0.001 | 0.75 | ||||
| Place of birth | |||||||
| France mainland | 126/2 364 | 5.3 | 562/2 351 | 23.9 | 4.48 | 4.54 | (3.74 to 5.52) |
| France overseas | 2/49 | 4.1 | 17/51 | 33.3 | 8.17 | 9.78 | (2.08 to 46.02) |
| Sub-Saharan Africa | 3/55 | 5.5 | 14/50 | 28.0 | 5.13 | 4.18 | (1.12 to 15.61) |
| Maghreb | 3/38 | 7.9 | 6/38 | 15.8 | 2.00 | 3.03 | (0.44 to 20.74) |
| Others | 2/71 | 2.8 | 14/78 | 17.9 | 6.37 | 5.82 | (1.30 to 26.05) |
| p Value | 0.82 | 0.21 | 0.70 | ||||
| Size of the city | |||||||
| Less than 2000 inhabitants | 12/178 | 6.7 | 41/141 | 29.1 | 4.31 | 4.36 | (2.27 to 8.36) |
| From 2000 to 20 000 inhabitants | 3/206 | 1.5 | 63/240 | 26.3 | 18.02 | 17.64 | (5.52 to 56.36) |
| From 20 000 to 100 000 inhabitants | 18/236 | 7.6 | 68/271 | 25.1 | 3.29 | 3.34 | (1.98 to 5.64) |
| More than 100 000 inhabitants | 54/930 | 5.8 | 225/890 | 25.3 | 4.35 | 4.38 | (3.25 to 5.91) |
| Paris area | 23/541 | 4.3 | 144/551 | 26.1 | 6.15 | 6.31 | (4.03 to 9.88) |
| Unknown | 26/488 | 5.3 | 73/480 | 15.2 | 2.85 | 2.71 | (1.71 to 4.28) |
| p Value (unknown excluded) | 0.03 | 0.90 | 0.02 | ||||
| Occupation | |||||||
| Student | 68/1266 | 5.4 | 320/1 298 | 24.7 | 4.59 | 4.57 | (3.51 to 5.94) |
| General high school | 3/56 | 5.4 | 9/72 | 12.5 | 2.33 | 2.53 | (0.67 to 9.54) |
| Professional high school | 5/102 | 4.9 | 23/102 | 22.5 | 4.60 | 3.61 | (1.34 to 9.71) |
| Professional training | 10/188 | 5.3 | 42/168 | 25.0 | 4.70 | 4.92 | (2.38 to 10.20) |
| Employed | 31/588 | 5.3 | 140/550 | 25.5 | 4.83 | 4.58 | (3.10 to 6.78) |
| Unemployed | 19/365 | 5.2 | 79/364 | 21.7 | 4.17 | 4.44 | (2.65 to 7.44) |
| Others | 0/14 | 0.0 | 1/19 | 5.3 | . | . | |
| p Value | 1.00 | 0.19 | 0.94 | ||||
| No. of sexual partner in the past year | |||||||
| 0 | 3/86 | 3.5 | 16/79 | 20.3 | 5.81 | 5.75 | (1.67 to 19.78) |
| 1 | 43/1055 | 4.1 | 231/1 090 | 21.2 | 5.20 | 5.20 | (3.75 to 7.20) |
| 2 and more | 87/1383 | 6.3 | 355/1 355 | 26.2 | 4.16 | 4.17 | (3.30 to 5.27) |
| p Value | 0.04 | 0.12 | 0.51 | ||||
| New partners in the past 3 months | |||||||
| Yes | 80/1126 | 7.1 | 283/1 115 | 25.4 | 3.57 | 3.60 | (2.81 to 4.62) |
| No | 53/1383 | 3.8 | 317/1 394 | 22.7 | 5.93 | 5.97 | (4.46 to 7.99) |
| p Value | <0.001 | 0.07 | 0.01 | ||||
| Previous screening | |||||||
| Yes | 15/118 | 12.7 | 31/108 | 28.7 | 2.26 | 2.14 | (1.13 to 4.06) |
| No | 110/2 214 | 5.0 | 518/2 245 | 23.1 | 4.64 | 4.64 | (3.77 to 5.71) |
| Unaware | 11/243 | 4.5 | 65/216 | 30.1 | 6.65 | 6.41 | (3.35 to 12.25) |
| p Value | 0.001 | 0.03 | 0.04 | ||||
Bold font indicates a statistically significant p value. N is the total of participants and n represents the total of participants tested in each subgroup.
Adjustment: age, size of the city, having a new partner in the past 3 months, previous screening.
The total sums of the variables ‘No. of sexual partner in the past year’, and ‘New partner in the past 3 months’ are not equivalent with the total number (N) due to the missing data.
For the main regression, 5015 observations were included from the 5152 observations of the study (2.66% missing values).