Table 1.
Characteristics of the study participants and nonparticipants
| Participants | Nonparticipants | p | |
|---|---|---|---|
| N = 756 | N = 359 | ||
| Gender (male/female) | 290/466 | 156/203 | ns.* |
| Age at onset of diabetes (years) | 7 (4–10) | 7 (4–11) | ns.** |
| Cohort registration in 1995 or 2000 | |||
| Age (years) | 13 (9–16) | 13 (10–16) | ns.** |
| Median observational period in years | 6.1 (4.0–7.3) | ||
| Median HbA1c during observational period (%) | 8.2 (7.6–9.0) | ||
| Questionnaire survey in 2010 or 2011 | |||
| Age in years | 27 (23–29) | ||
| Diabetes duration in years | 18 (15–21) | ||
| Median HbA1c in 2010 or 2011, in % | 7.5 (6.7–8.4) | ||
Median (interquartile range) values are generally shown in the table
* Comparison with participants using the chi-squared test
** Comparison with participants using the Mann–Whitney test