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

Table 1

Sociodemographic characteristics of participants.

Variables	Stage 1	Stage 2
	278	373
Age (M, SD, years)	35.1 12.8	33.4 12.2
Sex (women, , %)	172 (62%)	223 (60%)
Season of birth (, %)
Winter	75 (27%)	92 (25%)
Spring	67 (24%)	94 (25%)
Summer	68 (24.5%)	88 (24%)
Autumn	68 (24.5%)	99 (26%)
SPQ total score	17.72 10.85	17.25 11.13
Cognitive-perceptual factor	7.51 5.65	7.13 5.62
Interpersonal factor	8.44 5.77	8.13 5.82
Disorganized factor	3.88 3.13	3.98 3.30

Note. SPQ: Schizotypal Personality Questionnaire.