Table 1 Median proportion of incompletely reported efficacy and harm outcomes per trial, stratified by trial characteristics, among 519 randomised trials published in December 2000 and cited in PubMed

Efficacy outcomes Harm outcomes Trial characteristic No of trials Median % of incompletely reported outcomes per trial* No of trials Median % of incompletely reported outcomes per trial* All trials 505 42 308 50 Parallel group trials 375 22 237 25 Crossover trials 110 100 62 82 Other study designs 20 59 9 80 General medical journal 37 40 26 58 Specialty journal 468 43 282 47 Full industry funding 163 46 133 56 Partial or non-industry funding 290 42 142 27

^* 10-90th centile ranges were 0-100% for all median percentages except for efficacy outcomes in crossover trials (48-100%).

Trials with unknown funding sources were excluded.