SRH was measured with a single validated question [ 5, 43] (see Additional file 1) which was completed a median (interquartile range) of 12 (5–25) days after diabetes diagnosis.
34 Furthermore, the use of a simple and validated question to identify inactive patients 19 can also be used in everyday primary care to identify those who would benefit from a physical activity intervention.
The questions were all validated questions used in original or slightly modified versions.
We used a validated three question screening index to identify subjects with inadequate or marginal HL [ 23].
One such instrument is the PHQ-2, a validated 2 question screen that can identify patients with diabetes that may benefit from further evaluation for comorbid depression.
The Oxford Shoulder Score is a validated 12 question shoulder disability completed independently by the individual, with a score ranging from 0 to 48, where 0 represents maximal disability and 48 no disability[ 59].
The question was taken from a battery of validated questions used in a study on children's activity and inactivity in the Netherlands (Janz et al., 2005), and translated into Norwegian for use in this study.
The primary outcome measure is the score obtained from the validated question form.
The study questionnaire comprises questions from validated question batteries, questions from the regional population survey, and some questions specifically designed for the study (Table 2), in order to thoroughly evaluate the patients' health status as well as the study methodology.
