Table 2 Characteristics of all focus group participants (N = 37)

Sex (% female)

75.7

Age (years)

60.9 ± 4.1

BMI (kg/m²)

25.2 ± 3.9

 Underweight (%)

2.7

 Normal weight (%)

48.6

 Overweight (%)

37.8

 Obesity (%)

10.8

Educational level (% higher educated)

59.5

Average number of grandchild(ren) (regardless of their age) per grandparent

2.7 ± 1.3

 Mean age of all grandchild(ren) (years)

4.6 ± 2.9

Average number of grandchild(ren) aged ≤ 5 years per grandparent at data collection

1.9 ± 0.9

 Mean age of these grandchild(ren) (years)

3.0 ± 1.6