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Consistency of Beliefs, Intention to Use and Actual Use of Birth Control Methods |
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| Percentage Responding (a) |
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| Belief of how a specific method acts |
Acts at Stage 2 (b) |
Does not act at Stage 2 |
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| Intention to use any method that acts at Stage 2 (b) |
No |
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| Actual use of the specific method |
No |
Yes |
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| Response Consistency |
Consistent (c) |
Inconsistent (d) |
Consistent (e) |
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| Condoms |
1.0 (0.2,1.8) |
0.8 (0.1,1.5) |
14.6 (11.8,17.4) |
| Sterilization |
4.1 (2.5,5.7) |
0.3 (0.0,0.7) |
4.7 (3.0,6.4) |
| Oral Contraceptives |
8.3 (6.1,10.5) |
1.5 (0.5,2.5) |
16.2 (13.3,19.1) |
| Progestin-only pills |
7.3 (5.2,9.4) |
0.2 (0.0,0.6) |
2.4 (1.2,3.6) |
| Intrauterine Devices |
10.4 (8.0,12.8) |
0.0 (0.0,0.0) |
1.1 (0.3,1.9) |
| Depo-Provera |
4.4 (2.8,6.0) |
0.5 (0.0,1.1) |
1.8 (0.7,2.9) |
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| Percentage Responding (a) |
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| Belief of how a specific method acts |
Acts at Stage 3 (b) |
Does not act at Stage 3 |
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| Intention to use any method that acts at Stage 3 (b) |
No |
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| Actual use of the specific method |
No |
Yes |
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| Response Consistency |
Consistent (c) |
Inconsistent (d) |
Consistent (e) |
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| Condoms |
0.5 (0.0,1.1) |
0.8 (0.1,1.5) |
23.0 (19.7,26.3) |
| Sterilization |
4.5 (2.9,6.1) |
0.2 (0.0,0.6) |
6.8 (4.8,8.8) |
| Oral Contraceptives |
1.9 (0.8,3.0) |
0.5 (0.0,1.1) |
27.4 (23.9,30.9) |
| Progestin-only pills |
1.5 (0.5,2.5) |
0.2 (0.0,0.6) |
4.4 (2.8,6.0) |
| Intrauterine Devices |
5.7 (3.9,7.5) |
0.0 (0.0,0.0) |
2.8 (1.5,4.1) |
| Depo-Provera |
1.6 (0.6,2.6) |
0.2 (0.0,0.6) |
4.4 (2.8,6.0) |
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(a) Percentages are of all respondents to questionnaire who gave the combined responses indicated in the particular column for each specific birth control method. Parentheses include 95% confidence interval limits. (b) Stage 2 – After fertilization but before implantation; Stage 3 – After implantation in the uterus. (c) This column includes respondents who gave the following internally consistent responses: they would not use a method that acted at Stage 2 or 3, believed that the specific method acted at Stage 2 or 3, and reported no actual use of the method. (d) This column includes respondents who gave the following internally inconsistent responses: they would not use a method that acted at Stage 2 or 3, believed that the specific method acted at Stage 2 or 3, and reported actual use of the method. (e) This column includes respondents who gave the following internally consistent responses: they would not use a method that acted at Stage 2 or 3, believed that the specific method did not act at Stage 2 or 3, and reported actual use of the method. | |||
Dye et al. BMC Women's Health 2005 5:11 doi:10.1186/1472-6874-5-11 |
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