3.3. UBT results
Of the 1504 possible UBT tests, a total of 333 (22.14%) were missed. In the placebo group, 142/752 (19%) were missed, and 191/752 (25%) were missed in the modafinil group. A Poisson regression model (with overdispersion) showed no significant difference between the groups on the rate of missed UBT tests (χ2 (1) = 1.32, p = .25). In the placebo group, 52/142 of the missed tests came prior to dropout, and 90/142 post dropout, compared to 69/191 pre-dropout and 122/191 post-dropout in the modafinil group, so missing data was comprised of about 33% intermittent missingness and 67% dropout, in both groups.
3.3. UBT resultsOf the 1504 possible UBT tests, a total of 333 (22.14%) were missed. In the placebo group, 142/752 (19%) were missed, and 191/752 (25%) were missed in the modafinil group. A Poisson regression model (with overdispersion) showed no significant difference between the groups on the rate of missed UBT tests (χ2 (1) = 1.32, p = .25). In the placebo group, 52/142 of the missed tests came prior to dropout, and 90/142 post dropout, compared to 69/191 pre-dropout and 122/191 post-dropout in the modafinil group, so missing data was comprised of about 33% intermittent missingness and 67% dropout, in both groups.
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