Statistical code for prereg cnkfg

Statistical Code Do Families with Greater—but Not the Greatest—Difficulties Benefit Most from Parenting Programs? An Individual Participant Data Meta-Analysis (Leijten et al., submitted to Clinical Psychological Science on 23 February 2026) https://doi.org/10.17605/OSF.IO/CNKFG Statistical Code for Research Question 1 Effects by Level of Prevention of Children’s Conduct Problems Stata v.18 . foreach var of varlist pecbitotal_2 psdqadhd_2 psdqemo_2 ppraise_2 prewards_2 pphysdisc_2 pverbdisc_2 pfollowthru_2 pdasstotal_2 { 2. mixed `var' condition _I*, nocons || trial_id: condition, nocons 3. bysort prevtreat_type: mixed `var' condition _I*, nocons || trial_id: condition, nocons 4. } Statistical Code for Research Question 2 Effects by Pre-Intervention Levels of Target Outcomes Stata v.18 *replace pecbitotal_1=. if pecbitotal_1