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Table 3 Women's opinions and attitudes related to postfertilization effects of family planning methods.

From: Women's attitudes towards mechanisms of action of family planning methods: survey in primary health centres in Pamplona, Spain

OPINION OR ATTITUDE n (%) CI 95%
Human life beginning Fertilization 266 (46.3) (42.1–50.4)
  Implantation 103 (18) (14.8–21.3)
  After Implantation 102 (17.7) (14.7–21.1)
  Other * 104 (18) (15–21.4)
  Total 575 (100)  
Embryonic loss' cause Not important 141 (24.3) (20.9–28.1)
  Important 33 (58.7) (54.5–62.7)
  Unsure 98 (17) (13.9–20.2)
  Total 578 (100)  
Would consider using a method that Yes 222 (38.4) (34.4–42.5)
may work after fertilization No 228 (39.4) (35.4–43.6)
  Unsure 128 (22.2) (18.8–25.7)
  Total 578 (100)  
Would consider using a method that Yes 84 (14.5) (11.7–17.6)
may work after implantation No 330 (57) (52.8–61.1)
  Unsure 165 (28.5) (24.8–32.4)
  Total 579 (100)  
Decision about using a method Stop using 205 (35.3) (31.4–39.3)
after learning it may work after Continue using 183 (31.6) (27.7–35.4)
fertilization Unsure 192 (33.1) (29.2–37)
  Total 581 (100)  
Decision about using a method Stop using 325 (56.3) (51.8–60)
after learning it may work after Continue using 79 (13.7) (10.9–16.7)
implantation Unsure 173 (30) (26.1–33.7)
  Total 581 (100)  
  1. CI 95%: 95% confidence interval of the proportion.
  2. * Other: includes the other options in the questionnaire: "there is no exact time", "I am not sure", "I do not have an opinion," and "sometime before fertilization".
  3. Embryonic loss' cause: refers to whether it is important to distinguish natural embryo losses from those that may be caused by birth control methods.