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Table 3 Concordance of responses between sibling pairs on recalled measures of childhood socioeconomic position, by age, sex, education level, income, and twin status.

From: Concordance of sibling's recall of measures of childhood socioeconomic position

   Age < 45 Age ≥ 45 Brothers Brother/Sister Sisters Less than high school High school graduate Some college College graduate Not poor Poor Non-twins Twins
Median N (range)*   554
(500-609)
602
(552-659)
313
(288-340)
412
(397-455)
440
(393-477)
127
(102-148)
435
(405-481)
331
(304-364)
264
(254-278)
776
(714-834)
388
(354-437)
438
(411-475)
719
(650-793)
Father's occupation Concordance 0.79 0.82 0.82 0.78 0.81 0.82 0.78 0.78 0.86 0.83 0.76 0.76 0.83
  Kappa 0.74 0.79 0.77 0.76 0.78 0.68 0.68 0.75 0.85 0.80 0.70 0.76 0.77
Father with professional occupation Concordance 0.96 0.97 0.96 0.97 0.97 0.98 0.98 0.96 0.95 0.97 0.97 0.97 0.97
  Kappa 0.81 0.84 0.80 0.85 0.82 0.66 0.65 0.81 0.87 0.85 0.73 0.83 0.82
Father with supervisory role at work Concordance 0.79 0.76 0.76 0.76 0.80 0.72 0.76 0.78 0.80 0.79 0.74 0.77 0.77
  Kappa 0.54 0.52 0.51 0.50 0.59 0.52 0.54 0.53 0.54 0.56 0.48 0.53 0.54
Father's education level Concordance 0.73 0.72 0.72 0.74 0.73 0.70 0.66 0.74 0.82 0.73 0.72 0.76 0.71
  Kappa 0.77 0.76 0.77 0.79 0.78 0.66 0.66 0.78 0.83 0.78 0.77 0.82 0.76
Mother's education level Concordance 0.71 0.67 0.68 0.68 0.71 0.61 0.66 0.70 0.77 0.70 0.67 0.69 0.70
  Kappa 0.74 0.70 0.71 0.72 0.75 0.56 0.65 0.70 0.80 0.73 0.70 0.72 0.73
Welfare for 6 months or longer Concordance 0.95 0.94 0.94 0.95 0.95 0.91 0.93 0.96 0.99 0.95 0.93 0.96 0.94
  Kappa 0.49 0.42 0.27 0.49 0.53 0.63 0.26 0.46 0.56 0.40 0.50 0.33 0.49
Better off financially than others Concordance 0.61 0.60 0.58 0.61 0.62 0.60 0.61 0.60 0.62 0.61 0.60 0.60 0.61
  Kappa 0.47 0.45 0.44 0.47 0.47 0.35 0.43 0.44 0.47 0.47 0.42 0.45 0.47
  1. * Range of number of pairs included in analyses of different socioeconomic measures.