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Table 2 Objective vs. self-report follow up at four months

From: Assessing the validity and reliability of self-report data on contraception use in the MObile Technology for Improved Family Planning (MOTIF) randomised controlled trial

 

Self-report (number)

Objective measurement (number)

Current contraception use

 Intra-uterine device

11

11

 Implant

4

4

 Injectable

3

3

 Oral contraceptive

9

9

 No method/non-effective method

19

19

Total effective

27

27

Total no/non-effective method

19

19

Total measurements included in analysis

46

46

  1. Amongst the 46 participants the sensitivity of self-report data compared to objective measurement (gold standard) was 100% (27/27*100) and the specificity was 100% (19/19*100)