Table 1 Characteristics of study sample at MIRA baseline, exit visit and post-trial visit; n = 801
From: Change in condom and other barrier method use during and after an HIV prevention trial in Zimbabwe
| Â | Â | Study sample | |
|---|---|---|---|
| Â | Â | n = 801 | % |
Baseline | Â | Â | Â |
Randomization arm | Intervention | 381 | 47.6 |
| Â | Control | 420 | 52.4 |
Age group | 18-24 | 261 | 32.6 |
| Â | 25-34 | 379 | 47.3 |
| Â | 35+ | 161 | 20.1 |
Education (binary) | < High school | 447 | 55.8 |
Married | Yes | 775 | 96.8 |
Cohabitating | Yes | 777 | 97.0 |
Lifetime partners (1 vs. > 1) | One lifetime partner | 628 | 78.4 |
Ever had vaginal sex using a male condom (screening) | Yes | 525 | 65.5 |
Ever had vaginal sex using a male condom (enrolment) | Yes | 728 | 91.0 |
Condom use in the past 3 months (enrolment) | Always | 215 | 26.8 |
| Â | Sometimes | 356 | 44.4 |
| Â | Never | 230 | 28.7 |
Male condom use at last sex (enrolment) | Yes | 569 | 71.0 |
Ever female condom use (enrolment) | Yes | 58 | 7.2 |
Female condom use at last sex (enrolment) | Yes | 27 | 3.4 |
Last sex act protected by a barrier method (enrolment) | Yes | 590 | 73.7 |
Ever used diaphragm | Yes | 1 | 0.1 |
Coital frequency per week at screening (≤3, > 3) | ≤3 | 423 | 52.8 |
Main contraceptive at screening (#) | Long term | 25 | 3.1 |
| Â | Injectable | 113 | 14.1 |
| Â | Pill | 514 | 64.2 |
| Â | Barrier method | 95 | 11.9 |
| Â | Other/none | 54 | 6.7 |
MIRA follow up and exit | Â | Â | Â |
Number of quarterly follow-up visits in MIRA | Mean; median (range) | 6.83; 8 (1-8) | Â |
Ever had a new regular partner during MIRA trial | Yes | 212 | 26.5 |
Kept/took diaphragm at exit visit (entire sample) | Yes | 579 | 72.3 |
Kept/took diaphragm in intervention arm (at exit visit) n = 381 | Yes | 369 | 96.9 |
Took diaphragm in control arm (at exit visit) n = 420 | Yes | 210 | 50.0 |
Main contraceptive at exit visit (#) | Long term | 26 | 3.3 |
| Â | Injectable | 139 | 17.4 |
| Â | Pill | 457 | 57.1 |
| Â | Barrier method | 108 | 13.5 |
| Â | Other/none | 71 | 8.9 |
Post-trial study visit | Â | Â | Â |
Months between last MIRA visit and post-trial visit | Mean; median (range) | 9.41; 9 (2-20) | Â |
| Â | Total n | n | % |
Male condom use at last sex | 801 | 497 | 62.1 |
Female condom use at last sex | 801 | 21 | 2.4 |
Diaphragm use at last sex (intervention arm) | 381 | 192 | 50.4 |
Diaphragm use at last sex (intervention arm)* | 369 | 190 | 51.5 |
Diaphragm use at last sex (control arm)* | 210 | 31 | 14.8 |
Diaphragm and male condom use at last sex (intervention arm) | 381 | 123 | 32.3 |
Diaphragm and male condom use at last sex (intervention arm)* | 369 | 122 | 33.1 |
Diaphragm and male condom use at last sex (control arm)* | 210 | 10 | 4.8 |
Protected last sex act | 801 | 597 | 74.5 |