Table 1.
Profile of the study population according to delivery system
| Total | Pill | Patch | Ring | p Value | |
|---|---|---|---|---|---|
| Age, years (mean (SD)) |
25.29 (4.79) |
25.14 (4.81) |
25.49 (4.78) |
25.56 (4.71) |
<0.0001a |
| Time using the current method, months (mean (SD)) |
27.08 (24.84) |
30.83 (28.40) |
19.28 (15.07) |
21.57 (16.01) |
<0.0001a |
| Obstetric history (mean (SD)) |
|
|
|
|
|
| Pregnancies |
0.36 (0.79) |
0.36 (0.79) |
0.52 (0.87) |
0.32 (0.75) |
<0.0001a |
| Deliveries |
0.26 (0.60) |
0.26 (0.60) |
0.37 (0.71) |
0.22 (0.56) |
<0.0001a |
| Abortions (spontaneous) |
0.05 (0.26) |
0.05 (0.25) |
0.09 (0.35) |
0.05 (0.23) |
0.001a |
| Abortions (induced) |
0.08 (0.35) |
0.09 (0.38) |
0.12 (0.38) |
0.06 (0.27) |
<0.0001a |
| Live childbirths |
0.17 (0.50) |
0.17 (0.50) |
0.22 (0.58) |
0.14 (0.47) |
0.0004a |
| Stable partner |
|
|
|
|
|
| Yes |
7,106 (82.1%) |
4,367 (81.5%) |
679 (80.6%) |
2,060 (83.9%) |
<0.0153b |
| No |
1,549 (17.9%) |
991 (18.5%) |
164 (19.5%) |
394 (16.1%) |
|
| Education |
|
|
|
|
<0.0001b |
| Primary |
934 (10.8%) |
655 (12.2%) |
109 (12.9%) |
170 (6.9%) |
|
| Secondary |
3,885 (44.8%) |
2,479 (46.2%) |
406 (47.9%) |
1,000 (40.5%) |
|
| University |
3,863 (44.5%) |
2,233 (41.6%) |
333 (39.3%) |
1,297 (52.6%) |
|
| Occupational status |
|
|
|
|
<0.0001b |
| Working outside the home |
4,960 (57.3%) |
3,018 (56.28%) |
476 (56.4%) |
1,466 (59.6%) |
|
| Homemaker |
561 (6.5%) |
363 (6.8%) |
90 (10.7%) |
108 (4.4%) |
|
| Student |
2,353 (27.2%) |
1,451 (27.1%) |
208 (24.6%) |
694 (28.2%) |
|
| Unemployed |
790 (9.1%) |
530 (9.9%) |
70 (8.3%) |
190 (7.7%) |
|
| Reasons for omission/delay |
|
|
|
|
|
| Forgetfulness/delays |
2,622 (71.2%) |
1,996 (74.9%) |
172 (47.8%) |
494 (69.1%) |
<0.0001b |
| Altered libido |
214 (5.8%) |
180 (6.8%) |
14 (3.9%) |
20 (3.0%) |
0.0003b |
| Weight gain |
211 (5.7%) |
201 (7.5%) |
4 (1.1%) |
6 (0.9%) |
<0.0001b |
| Common course of action after noncompliance |
|
|
|
|
|
| Use the contraceptive as soon as possible |
2,396 (65.1%) |
1,745 (65.5%) |
235 (65.3%) |
416 (63.3%) |
0.5868 b |
| Consult a health care provider |
598 (22.1%) |
337 (16.2%) |
76 (14.1%) |
145 (21.1%) |
<0.0001b |
| Use two or more methods to compensate for the days missed |
353 (9.6%) |
339 (12.7%) |
5 (1.4%) |
9 (1.4%) |
<0.0001b |
| Routine method |
|
|
|
|
<0.0001b |
| At the same time every day |
5,837 (67.6%) |
3,621 (67.6) |
515 (61.0%) |
1,701 (70.0%) |
|
| Daily task |
1,472 (17.1%) |
933 (17.4) |
168 (19.9%) |
371 (15.3%) |
|
| Thinking of it but not yet organized |
712 (8.3%) |
514 (9.6%) |
85 (10.1%) |
113 (4.7%) |
|
| Not interested |
183 (2.1%) |
117 (2.2%) |
38 (4.5%) |
28 (1.2%) |
|
| Others |
429 (5.0%) |
174 (3.3%) |
38 (4.5%) |
217 (8.9%) |
|
| Difficulties remembering to use the contraceptive method |
|
|
|
|
|
| During the week, from Monday to Friday |
856 (9.8%) |
510 (9.4%) |
86 (10.1%) |
260 (10.5%) |
0.3234 b |
| On vacation |
2,745 (31.3%) |
1,531 (28.2%) |
279 (32.6%) |
935 (37.6%) |
<0.0001b |
| On weekend |
2,426 (27.7%) |
1,889 (34.8%) |
175 (20.4%) |
362 (14.6%) |
<0.0001b |
| On short trips |
966 (11.0%) |
606 (11.2%) |
101 (11.8%) |
259 (10.4%) |
0.4592 b |
| Going out the night before |
1,127 (12.9%) |
863 (15.9%) |
114 (13.3%) |
150 (6.0%) |
<0.0001b |
| Travelling to a different time zone | 513 (5.9%) | 206 (3.8%) | 46 (5.4%) | 261 (10.5%) | <0.0001b |
aKruskal-Wallis test.
bChi-squared test.
p < 0.05.
SD: Standard Deviation.