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. Author manuscript; available in PMC: 2010 May 1.
Published in final edited form as: Contraception. 2009 May;79(5):356–362. doi: 10.1016/j.contraception.2008.11.012

Table 3.

Perceptions of last cycle using the IUD, as recorded during the follow-up interview*

Timing and type of problem Time period
1st period 0–9 weeks 2nd period 9–19 weeks 3rd period 19–39 weeks 4th period >39 weeks

Last menses
Level of menstrual pain compared to before the IUD
 Less 398 (25.3) 468 (29.3) 456 (27.1) 441 (27.7)
 Same 571 (36.4) 640 (40.1) 677 (40.3) 629 (39.5)
 More 601 (38.3) 488 (30.6) 547 (32.6) 524 (32.9)
Amount of blood loss compared to before the IUD
 Less 181 (11.5) 229 (14.3) 220 (13.1) 189 (11.9)
 Same 324 (20.6) 469 (29.4) 554 (33.0) 632 (39.6)
 More 1065 (67.8) 898 (56.3) 906 (53.9) 773 (48.5)
Days of bleeding
 Mean (s.d) 6 (2.7) 5.9 (2.9) 6.1 (3.4) 5.6 (2.6)
 Median 5 5 5 5

Last intermenstrual interval
Any pain 341 (21.7) 299 (18.7) 363 (21.6) 387 (24.3)
Number of pain days
 Mean (s.d) 0.81 (2.5) 0.68 (2.4) 0.99 (3.3) 0.94 (2.7)
 Median 0 0 0 0
Any spotting 376 (24.0) 320 (20.0) 418 (24.9) 451 (28.3)
Number of spotting days
 Mean (s.d) 1 (3) 1 (3.7) 1.3 (4.2) 1 (2.5)
 Median 0 0 0 0

Total number of follow-up reports 1570 1596 1680 1594
*

From follow-up forms over a 12-month period.

Note: This analysis is based on 6,440 follow-up reports; of the 6,655 total reports, 215 were excluded from this analysis because the participant had not experienced a full cycle with the IUD in situ.