Table 3

Familial RRs for type 2 diabetes in half-siblings and adoptees

MenWomenAll
OSIR (95% CI)OSIR (95% CI)Person-yearsOSIR (95% CI)
Half-siblings
    By mother302.35 (1.12–4.75)162.15 (0.87–4.94)29,435462.28 (1.18–4.3)
    By father181.54 (0.64–3.45)131.84 (0.69–4.47)32,656311.65 (0.79–3.32)
    All481.96 (1.02–3.68)292.00 (0.95–4.07)62,091771.98 (1.10–3.5)
Adoptees
    By biological parents452.06 (1.50–2.75)732.24 (1.75–2.81)49,7491182.16 (1.79–2.59)
    By adopted parents200.79 (0.48–1.23)151.27 (0.71–2.1)50,260350.95 (0.66–1.32)
  • O, observed number of cases.