Figure 2

QIDS scores for 0, 1, or 2 minor alleles. For the Sleep Clinic sample, the QIDS depression score is plotted (with 95% confidence limits) for zero, one, or two minor alleles in rs25702. Since the sample was largely male, there were only 3 females (less than 1%) with two minor alleles in rs28900, rs25714, or rs25702. The small number with two minor alleles accounted for the large confidence limit in QIDS scores for that group. It appeared that women with one or two minor alleles had averaged about the same QIDS score, suggesting a dominant trait associated with lower QIDS score.