Table 3

Multiply adjusted OR of achieving higher grades in Swedish for children born preterm, calculated by parental education (n=10 242)

Concordantly low educationDiscordant educationConcordantly high educationp Value interaction
OR95% CIOR95% CIOR95% CI
Minimally adjusted*0.540.41 to 0.710.910.64 to 1.301.110.76 to 1.640.003
Model 4†0.600.45 to 0.800.970.67 to 1.401.200.80 to 1.810.006
Model 5‡0.590.44 to 0.790.950.66 to 1.371.210.81 to 1.820.003

  • ↵* Adjusted for birth year of child.

  • ↵† Additionally adjusted for maternal age, gender and parity.

  • ↵‡ Additionally adjusted for fetal growth.