Interaction Effects of Season of Birth and Cytokine Genes on Schizotypal Traits in the General Population

Table 4

Means and SD of the SPQ total and factor scores by SOB and IL4 genotype in the extended sample.

SPQ scores	Winter SOB		Nonwinter SOB
	CC homozygotes	T allele carriers	CC homozygotes	T allele carriers
SPQ total score	20.59 10.36	13.58 10.04	16.75 11.39	16.78 11.09
Cognitive-perceptual factor	8.37 4.66	5.42 4.29	6.71 5.54	7.41 6.40
Interpersonal factor	9.28 5.95	7.04 5.77	8.17 5.92	7.57 5.53
Disorganized factor	5.06 3.79	2.83 2.37	3.83 3.33	3.81 2.94

Note. SPQ: Schizotypal Personality Questionnaire; SOB: season of birth. Differences between carriers of CC genotype and T allele are significant in the winter SOB group: Bonferroni adjusted . Bonferroni adjusted .