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Table 2 Percentage of mothers and fathers (95% confidence interval) experiencing elevated psychological distress (K6 > =8), by grandparent mental health history (unadjusted analyses)

From: A three generation study of the mental health relationships between grandparents, parents and children

Mental health history in grandparent N (%) Parents with elevated psychological distress (%) 95% CI Test statistic p-value
Mothers
Maternal grandmother No 4441 (74.8) 8.7 7.8–9.6 χ 2 (1) = 87.1 <.001
  Yes 1498 (25.2) 17.4 15.2–19.5   
Maternal grandfather No 4996 (84.4) 9.5 8.6–10.3 χ 2 (1) = 58.3 <.001
  Yes 926 (15.6) 17.9 15.1–20.8   
Fathers
Paternal grandmother No 3661 (80.1) 8.7 7.7–9.7 χ 2 (1) = 32.5 <.001
  Yes 908 (19.9) 15.0 12.6–17.5   
Maternal grandfather No 4025 (88.1) 9.1 8.1–10.1 χ 2 (1) = 25.3 <.001
  Yes 544 (11.9) 16.1 12.6–19.5   
  1. B and K Cohort figures are not shown separately, as the figures for each cohort are highly similar.