This study sought to identify single nucleotide polymorphisms (SNPs) that could predict treatment outcome. No individual associations were found, but polygenic scores were constructed that could explain between 0.5 and 1.2% of variance in outcome. These scores included how many independent markers?
For the participants in the study who were treated with citalopram or escitalopram, which of the following outcome measures was strongly associated with SNPs in an intergenic region on chromosome 5?
Which of the following is a limitation relating to the treatment studies that may have affected this meta-analysis?