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Table 3 Percentage of agreement and kappa coefficient (95%CI) between the adolescents' responses and those of their proxy-respondents

From: Self-reported social class in adolescents: validity and relationship with gradients in self-reported health

  % of agreement Kappa coefficient (95%CI)
Paternal level of education 67.1 0.39 (0.23 – 0.54)
Maternal level of education 73.8 0.51 (0.36 – 0.67)
Highest level of education 63.6 0.41 (0.27 – 0.56)
Paternal social class 87.7 0.77 (0.58 – 0.96)
Maternal social class 74.4 0.56 (0.33 – 0.78)
Highest familiar social class 76.3 0.52 (0.35 – 0.68)
  1. Paternal, maternal and highest level of education are stratified in 3 categories: primary, secondary, and university degree. Paternal, maternal, and highest social class in 3 categories: I–II, III, IV–V. Subsample of adolescents and proxy-respondents within the urban sample.