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Table 2 Protocol compliance by final status category

From: Participant characteristics associated with withdrawal from a large randomized trial of spermicide effectiveness

 

Final status category

p-value†

 

Completed study

Did not complete study

 

Number of participants

879 (58%)

635 (42%)

 

Median days in analysis per participant

183

32

 

Mean % of expected follow-up visits completed*

85%

64%

<.0001

Mean % of expected diary days recorded*

97%

72%

<.0001

Mean % of expected pregnancy tests completed*

95%

97%

0.0001

  1. *The number of expected visits was prorated for each participant considering the total duration of her participation in the analysis
  2. †p-value from independent sample t-test.