Fig. 2

Dose–response association between intergenerational contact frequency and the odds for depressive symptoms. Frequency: 1 = almost never, 2 = less than once a year, 3 = once a year, 4 = once every 6 months, 5 = once every 3 months, 6 = once a month, 7 = every 2 weeks, 8 = once a week, 9 = 2–3 times a week and 10 = almost every day. OR: odd raio; lb.: lower limit; ub: upper limit