Sample characteristics (n=467)
| Variable | Mean (SD) | Skewness (SE) | Kurtosis (SE) |
| Age | 63.83 (8.04) | −0.98 (0.11) | 1.02 (0.23) |
| Sex (male/female) | 316/151 | −0.76 (0.11) | −1.43 (0.23) |
| Ethnicity | See table 2 | −2.37 (0.11) | 4.34 (0.23) |
| BMI | 30.96 (5.15) | 0.56 (0.11) | −0.13 (0.23) |
| Age of diabetes onset | 53.12 (10.29) | −0.71 (0.12) | 0.49 (0.23) |
| HbA1c (percentage) | 7.21 (0.99) | 0.76 (0.11) | 0.40 (0.23) |
| Daytime sleepiness (ESS) | 6.63 (4.37) | 0.83 (0.11) | 0.40 (0.23) |
| Sleep duration (min) | 400.53 (65.75) | −0.36 (0.12) | 0.73 (0.24) |
| Social jetlag | 1.34 (6.04) | 0.07 (0.12) | 2.44 (0.25) |
| IMD | 18 561.67 (9617.45) | −0.37 (0.12) | −1.16 (0.23) |
| SCS overall | 3.29 (0.65) | −0.32 (0.11) | 0.43 (0.23) |
| SCS subscale: self-kindness | 2.62 (0.97) | 0.14 (0.11) | −0.32 (0.23) |
| SCS subscale: self-judgment | 2.34 (1.02) | 0.60 (0.11) | −0.36 (0.23) |
| SCS subscale: common humanity | 2.88 (1.15) | 0.05 (0.11) | −0.90 (0.23) |
| SCS subscale: isolation | 2.27 (1.08) | 0.64 (0.11) | −0.45 (0.23) |
| SCS subscale: mindfulness | 3.16 (1.02) | −0.21 (0.11) | −0.55 (0.23) |
| SCS subscale: overidentified | 2.29 (1.02) | 0.66 (0.11) | −0.44 (0.23) |
| DDS | 1.86 (0.89) | 1.61 (0.11) | 2.86 (0.23) |
BMI, body mass index; DDS, Diabetes Distress Scale; ESS, Epworth Sleepiness Scale; HbA1c, hemoglobin A1c; IMD, index of multiple deprivation; SCS, Self-Compassion Scale.