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Table 4 Analyses of additive interaction

From: Infancy weight gain, parental socioeconomic position, and childhood overweight and obesity: a Danish register-based cohort study

Groups compared na RERI 95% CI
Weight gain category Education level    
Mean vs. rapid Low vs. high 8651 0.11 − 0.82 to 1.05
Mean vs. very rapid Low vs. high 8110 0.62 −1.32 to 2.56
Weight gain category Income level    
Mean vs. rapid Low vs. high 8651 −0.19 −1.19 to 0.81
Mean vs. very rapid Low vs. high 8110 1.07 −0.97 to 3.11
  1. Relative excess risk due to interaction (RERI) and 95% confidence intervals (95% CI) when testing additive interaction between infancy weight gain category and education level, and infancy weight gain category and income level, calculated based on the complete case population (n = 13,157). aNumber of subjects included in calculation. Calculations are based on the subjects that posit the values studied in each row