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Table 3 Numbers and percentages of women who obtained correct answers to pre-test/post-test questions and mean differences in test scores (N = 299)

From: Effectiveness of an intrauterine device informative intervention among post-natal women in Western Jamaica

Assessment questions

Pre-test

N (%)

Post-test

N (%)

% or mean difference

P-valuea

IUDs are a reversible method of contraception

219 (73.2)

289 (96.7)

23.42

 < 0.001

IUDs are extremely difficult to remove

145 (48.5)

25 (8.4)

40.1

 < 0.001

A woman can have mild cramps for a few days after IUD insertion

179 (59.9)

289 (96.7)

36.8

 < 0.001

IUDs increase the chance of pregnancy in the tubes

137 (45.8)

60 (20.1)

25.8

 < 0.001

There are 3 forms of IUDs

263 (88.0)

105 (35.1)

52.8

 < 0.001

A woman can become pregnant as soon as the IUD is removed

209 (69.9)

286 (95.7)

25.8

 < 0.001

IUDs can increase risk of anemia

58 (19.4)

70 (23.4)

4.0

0.140

IUDs can cause a woman to become infertile after it is removed

190 (63.6)

74 (24.8)

38.8

 < 0.001

IUDs often puncture the womb during insertion

177 (59.2)

46 (15.4)

43.8

 < 0.001

IUDs do not protect against sexually-transmitted diseases or HIV

241 (80.6)

246 (82.3)

1.7

0.564

IUDs can be easily removed by a doctor pulling on the string

172 (57.5)

288 (96.3)

38.8

 < 0.001

IUDs can cause longer and heavier menstrual flow

153 (51.2)

261 (87.3)

36.1

 < 0.001

IUDs are the most effective method of birth control

153 (51.2)

270 (90.3)

39.1

 < 0.001

IUDs expire and are no longer effective after a number of years

198 (66.2)

256 (85.6)

19.4

 < 0.001

IUDs keep sperm from reaching/fertilizing the egg

260 (87.0)

297 (99.3)

12.4

 < 0.001

IUDs are easy to insert with one doctor visit

221 (73.9)

292 (97.7)

23.8

 < 0.001

IUDs cause infections

241 (80.6)

47 (15.7)

64.9

 < 0.001

IUDs are very safe and risk of side effects is very low

149 (49.8)

274 (91.6)

41.8

 < 0.001

Mean (SD) of Cumulative IUD Knowledge Score

9.54

15.23

5.69

 < 0.001

  1. Bold = significant at p < 0.05
  2. aP-values generated from McNemar’s tests or Paired T-Test, as appropriate