| | Experimental group | Control group |
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SR2 status change | behaviour at pre-test | n | Mean | SD | n | Mean | SD |
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no | unsafe | 9 | -0,44 | 1,33 | 17 | -0,18 | 1,51 |
| safe | 111 | 0,11 | 0,59 | 81 | 0,17 | 0,72 |
| Total | 120 | 0,07 | 0,68 | 98 | 0,11 | 0,91 |
yes | Unsafe** | 9 | -1,89 | 2,26 | 2 | -1,00 | 1,41 |
| Safe* | 20 | 0,75 | 1,41 | 15 | 1,53 | 1,96 |
| Total** | 29 | -0,07 | 2,09 | 17 | 1,24 | 2,05 |
Total | unsafe | 18 | -1,17 | 1,95 | 19 | -0,26 | 1,48 |
| safe | 131 | 0,21 | 0,80 | 96 | 0,39 | 1,12 |
| Total** | 149 | 0,04 | 1,10 | 115 | 0,27 | 1,20 |
- Means and standard deviations (SD) for Unprotected Anal Intercourse (UAI)-change score (t2 – t0) for insertive and receptive anal sex by study condition, steady relationship(SR)-status change (yes vs no) and sexual behaviour at pretest (safe vs unsafe)1.
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1 ANCOVA adjusted for ethnic background (Dutch vs non-Dutch) and educational level (low level: elementary school, vocational school or lower-level high school; high level: university, college, or higher- level high school).
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2 SR = steady relationship
- * significant difference between experimental group and control group, P < 0.05
- ** significant difference between experimental group and control group, P < 0.01