Prospective association of seasonal adjusted 25(OH)D₃, 25(OH)D₂, phosphate, calcium and PTH concentrations (assessed at mean age 9.9 years) with psychotic experiences (PLIKS) (assessed at age 12.8 years).

N = 3182 (208 cases with suspected/definite PLIKS) and N = 2974 (142 cases with definite PLIKS; in these analyses suspected cases are removed from the analyses). Model 1 is unadjusted (all exposures are standardised for age and gender and 25(OH)D3 is adjusted for season and ethnicity). Model 2 as Model 1 plus adjustment for ethnicity, time spent outdoors during summer (age 8.5 years), use of sunblock, hat, covering clothing, avoidance of midday sun and BMI. Model 3 as Model 2 plus adjustment for head of household social class, mother’s and partner’s education, family history of mental health problems and puberty stage. Model 4 as Model 3 plus adjustment for serum concentrations of other hormones/metabolites which are related to vitamin D homeostasis (i.e. each of the exposures listed in the first column is mutually adjusted for all others in the first column).