Table 4 |
||||
|
Association between early study experience and failure to complete study* |
||||
|
Experience during first 6 weeks |
Total |
Did not complete study |
Relative Risk (95% confidence interval) |
|
|
N |
n |
% |
||
|
|
||||
|
Completed at least one follow-up visit |
||||
|
yes |
925 |
203 |
21.9 |
0.68 (0.53 – 0.87) |
|
no |
170 |
55 |
32.4 |
1 |
|
Completed at least one pregnancy test within first 4 weeks |
||||
|
yes |
1070 |
250 |
23.4 |
0.73 (0.41 – 1.31) |
|
no |
25 |
8 |
32.0 |
1 |
|
Provided diary information for each day |
||||
|
yes |
958 |
215 |
22.4 |
0.71 (0.54 – 0.94) |
|
no |
137 |
43 |
31.4 |
1 |
|
Used spermicide at every coital act |
||||
|
yes |
739 |
153 |
20.7 |
0.70 (0.57 – 0.87) |
|
no |
356 |
105 |
29.5 |
1 |
|
Of those who completed follow-up visit |
||||
|
Reported medical complaints |
||||
|
yes |
437 |
104 |
23.8 |
1.17 (0.92 – 1.50) |
|
no |
488 |
99 |
20.3 |
1 |
|
Disliked spermicide somewhat or a lot |
||||
|
yes |
52 |
12 |
23.1 |
1.05 (0.63 – 1.76) |
|
no |
873 |
191 |
21.9 |
1 |
|
Distrusted contraceptive efficacy |
||||
|
yes |
209 |
51 |
24.4 |
1.15 (0.87 – 1.52) |
|
no |
716 |
152 |
21.2 |
1 |
|
Disliked timing of application |
||||
|
yes |
435 |
96 |
22.1 |
1.01 (0.79 – 1.29) |
|
no |
490 |
107 |
21.8 |
1 |
|
Complained about messiness |
||||
|
yes |
375 |
76 |
20.3 |
0.88 (0.68 – 1.13) |
|
no |
550 |
127 |
23.1 |
1 |
|
Had problems with insertion |
||||
|
yes |
465 |
105 |
22.6 |
1.06 (0.83 – 1.35) |
|
no |
460 |
98 |
21.3 |
1 |
|
Reported that partner disliked spermicide |
||||
|
yes |
208 |
52 |
25.0 |
1.18 (0.90 – 1.56) |
|
no |
717 |
151 |
21.1 |
1 |
|
Happy with spermicide† |
||||
|
yes |
408 |
80 |
19.6 |
0.82 (0.64 – 1.05) |
|
no |
517 |
123 |
23.8 |
1 |
|
|
||||
|
*Includes only participants in the analysis for at least 6 weeks †Did not dislike spermicide, had no side effect/AE, and had a satisfied partner |
||||
|
Raymond et al. BMC Medical Research Methodology 2004 4:23 doi:10.1186/1471-2288-4-23 |
||||
