Comparison of baseline characteristics by those with and without 12-month HbA1c data
| Total at baseline (n=71) | Those with HbA1c data at 12 months (n=36) | Those with no HbA1c data at 12 months (n=35) | |
| Age, mean (SD) | 38.1 (13.1) | 39 (12.5) | 37.3 (13.9) |
| Gender, n (%) | |||
| Male | 17 (23.9) | 8 (22.2) | 9 (25.7) |
| Female | 54 (76.1) | 28 (77.8) | 26 (74.3) |
| Ethnicity, n (%) | |||
| White | 63 (92.6) | 35 (94.4) | 28 (87.5) |
| Black, Asian, minority ethnic | 5 (7.4) | 1 (2.8) | 4 (12.5) |
| Education, n (%) | |||
| No examinations completed | 2 (3.4) | 1 (3.8) | 1 (3.1) |
| GSCEs/O-levels or equivalent | 13 (22.4) | 6 (23.1) | 7 (21.9) |
| A-levels or equivalent | 13 (22.4) | 8 (30.8) | 5 (15.6) |
| University degree or higher | 30 (51.8) | 11 (42.3) | 19 (59.4) |
| Employment status, n (%) | |||
| Employed full time | 37 (63.8) | 19 (70.4) | 18 (58.1) |
| Employed part time | 7 (12.1) | 2 (7.4) | 5 (16.1) |
| Sick leave, unemployed, homemaker | 9 (15.5) | 5 (18.5) | 4 (12.9) |
| Retired | 2 (3.4) | 1 (3.7) | 1 (3.2) |
| Student | 3 (5.2) | 0 (0) | 3 (9.7) |
| Smoker, n (%) | 14 (26.4) | 7 (29.2) | 7 (24.1) |
| Duration of diabetes in years, mean (SD) | 18.3 (10.3) | 16.6 (10.2) | 20.2 (10.2) |
| Baseline HbA1c in mmol/mol, mean (SD) | 84.6 (17.8) | 83.3 (15.9) | 85 (17.3) |
| Depressive symptoms at baseline (PHQ-9 score), mean (SD) | 4.6 (3.3) | 5.4 (4.1) | 3.5 (3.5) |
| Anxiety symptoms at baseline (GAD-7 score), mean (SD) | 4 (3.9) | 5.3 (5.3) | 5.3 (5.3) |
| Diabetes distress at baseline (DDS score), mean (SD) | 48.2 (10.2) | 44.6 (15.8) | 44.9 (15.7) |
| At least mild symptoms (≥5) on PHQ-9 or GAD-7, n (%) | 47 (66.2) | 26 (72.2) | 21 (60) |
DDS, Diabetes Distress Scale; GAD-7, Generalised Anxiety Disorder 7-item scale (a measure of symptoms of anxiety); GSCE, General Certificate of Secondary Education; PHQ-9, Patient Health Questionnaire-9 (a measure of depressive symptoms).