Using CRP as a continuous measure, the OR for schizophrenia at age 27 years for each SD increase in CRP level at age 15/16 years was 1.22 (95% CI, 1.05–1.42), which remained significant after adjusting for potential confounders; adjusted OR 1.25 (95% CI, 1.07–1.46); P = 0.004. Here, CRP is linked to schizophrenia.