Differences in parental bonding between schizophrenia and bipolar disorder: Evidence of prodromal symptoms?

Background: The Parental Bonding Instrument (PBI) examines parent-child bonds and attachment during the first 16 years. Our study aims to compare PBI scores between patients with schizophrenia and bipolar disorder (BD).

Methods: We analyzed PBI scores in 59 patients with schizophrenia, 36 with BD and 52 healthy controls using ANCOVA, with age, gender and years of education as covariates.