Preferences for treatment among adolescents with Type 1 diabetes: a national study using a discrete choice experiment...

To test the possibility of using a discrete choice experiment model, on a national level in adolescents with Type 1 diabetes, in order to obtain a better understanding of drivers of and barriers to diabetes self-care.

A survey instrument was constructed and tested on a small group of the target population: adolescents aged 15 to <18 years with Type 1 diabetes. All individuals in Sweden belonging to this target group (N=2112) were then identified via the Swedish paediatric diabetes quality registry SWEDIABKIDS, and were sent an invitation to answer an online questionnaire. A valid response for the discrete choice experiment analyses was achieved from 431 individuals.

The included respondents were not statistically different from non-participants in terms of age and duration of diabetes, but more young women entered the study and the participants had (on average) a significantly lower HbA_1c value than the non-participants. Participants regarded as undesirable both non-severe hypoglycaemic events (day and night) and hyperglycaemic events. Avoiding weight gain and even achieving weight loss were the most important aspects among female respondents, who were willing to trade off a substantial level of glycaemic control [13 mmol/mol (1.2%)] to avoid a weight gain of 3 kg. Hypothetical equipment improvements were desired.

The responses may provide useful indications of the aspects that the respondents would prioritize given a real-life dilemma. For treatment effects, stratification along gender lines was important, whereas the treatment administration aspects were stratified according to treatment type because these aspects are closely related.