Table 2.

Percentage of Shared Variance in Consultation Frequency Between Families According to Consultation Diagnosis of at Least 1 Child, Corrected for Age, Sex, and Family Practice (N = 122,601)

Consultation Diagnosis*
Family MembersHeadache % (95% CI)Abdominal Pain % (95% CI)Minor Ailments % (95% CI)Musculoskeletal Trauma % (95% CI)Chronic Illness % (95% CI)All Diagnoses%
Note: Shared variance = squared correlation between both family members at family level; 100% = maximum influence of shared factors at family level, 0% = no influence of shared family factors.
CI = confidence interval.
* The consultation diagnosis was headache for 4,173 families, abdominal pain for 7,414, minor ailments for 50,639, musculoskeletal trauma for 12,644, and chronic illness for 28,617.
† Based on our previous research on within-family similarity of contact frequencies in family practice.17
Mother-father12.5 (9.4–16.0)10.0 (7.8–12.3)6.0 (5.3–6.7)10.0 (8.4–11.9)6.7 (5.8–7.7)9.0
Mother-son20.2 (16.4–24.1)34.1 (31.0–37.1)19.0 (18.0–20.0)23.8 (21.5–26.1)19.6 (18.2–21.1)21.2
Mother-daughter48.4 (44.5–52.3)34.7 (31.7–37.7)23.2 (22.1–24.3)27.8 (25.4–30.1)29.1 (27.6–30.6)24.0
Father-son4.7 (2.7–7.2)17.1 (14.4–19.8)8.8 (8.0–9.7)11.2 (9.4–13.1)6.6 (5.6–7.6)10.2
Father-daughter14.4 (11.1–18.1)6.9 (5.1–8.9)4.9 (4.3–5.6)7.4 (5.9–9.0)5.2 (4.3–6.1)9.0
Daughter-son27.6 (23.5–31.7)26.4 (23.4–29.4)15.1 (14.1–16.1)23.5 (21.3–25.8)18.1 (16.8–19.5)23.0