Table 1: Background characteristics of adolescents with diabetes in study 1.

Background dataGirls Boys

Age mean (SD)13.1 (1.0)13.7 (1.7)
Ethnicity: native Dutch, nonmigrant16 (100%)12 (100%)

Educational level
 Secondary school (vocational level)5 (31%)1 (8%)
 Secondary school (precollege level)10 (63%)5 (42%)
 Postsecondary education (vocational)1 (8%)
 Not reported1 (6%)5 (42%)

Parental educational level
 Secondary school7 (44%)3 (25%)
 Postsecondary education (vocational)3 (19%)2 (17%)
 College/university5 (31%)2 (17%)
 Not reported1 (6%)5 (42%)

Time since diagnosis
 <1 year3 (19%)2 (17%)
 1–5 years8 (50%)3 (25%)
 >5 years5 (31%)6 (50%)
 Not reported1 (6%)1 (8%)

Insulin administration
 Pump7 (44%)3 (25%)
 Injection8 (50%)8 (67%)
 Not reported1 (6%)1 (8%)

Last HbA1c level
 <7.5 (optimal)9 (56%)4 (33%)
 7.5–9.0 (suboptimal)6 (38%)1 (8%)
 >9.0 (high risk)2 (17%)
 Not reported1 (6%)5 (42%)