| All (N = 64) | Type 2 diabetes (N = 32) | IGT (N = 32) | p-value | |||||||
---|---|---|---|---|---|---|---|---|---|---|---|
 | Mean | (SD) |  | Mean | (SD) |  | Mean | (SD) |  | ||
Age (years) | 66.0 | (8.1) | Â | 66.8 | (6.7) | Â | 65.3 | (9.4) | 0.47a | ||
BMI (kg/m2) | 30.0 | (4.7) | Â | 30.8 | (4.3) | Â | 29.3 | (4.9) | 0.18a | ||
 |  | N | (%) |  | N | (%) |  | N | (%) |  | |
BMI (kg/m2) | ≤30 | 34 | (53) |  | 15 | (47) |  | 19 | (59) | 0.32b | |
 | >30 | 30 | (47) |  | 17 | (53) |  | 13 | (41) |  | |
Smoking | never smoker | 26 | (41) | Â | 10 | (31) | Â | 16 | (50) | 0.20c | |
 | ex smoker | 37 | (58) |  | 21 | (66) |  | 16 | (50) |  | |
 | occasional smoker | 1 | (2) |  | 1 | (3) |  | 0 | (0) |  | |
Employed | no | 50 | (78) | Â | 27 | (84) | Â | 23 | (72) | 0.23b | |
 | yes | 14 | (22) |  | 5 | (16) |  | 9 | (28) |  | |
HbA1c | <6.5% | 49 | (77) | Â | 18 | (56) | Â | 31 | (97) | <0.0001c | |
 | ≥6.5% | 15 | (23) |  | 14 | (44) |  | 1 | (3) |  | |
History of | Coronary heart disease | 4 | (6) | Â | 3 | (9) | Â | 1 | (3) | 0.61c | |
 | Angina pectoris | 5 | (8) |  | 2 | (6) |  | 3 | (9) | 1.00c | |
 | Myocardial infarction | 6 | (9) |  | 5 | (16) |  | 1 | (3) | 0.20c | |
 | Hypertension | 41 | (64) |  | 21 | (66) |  | 20 | (63) | 0.79b | |
 | None of these diseases | 21 | (33) |  | 9 | (28) |  | 12 | (38) | 0.42b | |
Medication use | Antidiabetics | 18 | (28) | Â | 17 | (53) | Â | 1 | (3) | <0.0001c | |
 | Beta blockers | 19 | (30) |  | 12 | (38) |  | 7 | (22) | 0.17b | |
 | Statins | 13 | (20) |  | 10 | (31) |  | 3 | (9) | 0.06c | |
 | None of the above | 28 | (44) |  | 6 | (19) |  | 22 | (69) | <0.0001c | |
ECG | Â | N | Mean | (SD) | N | Mean | (SD) | N | Mean | (SD) | Â |
5Â min-intervals | HR | 14,874 | 79.3 | (15.6) | 7,312 | 77.7 | (15.6) | 7,562 | 80.8 | (15.4) | <0.0001a |
 | RMSSD | 14,874 | 30.8 | (30.1) | 7,312 | 28.0 | (27.3) | 7,562 | 33.5 | (32.3) | <0.0001a |
 | SDNN | 14,874 | 47.1 | (25.1) | 7,312 | 45.9 | (24.6) | 7,562 | 48.2 | (25.5) | <0.0001a |
1Â h-intervals | HR | 1,203 | 79.1 | (14.4) | 597 | 77.3 | (14.4) | 606 | 80.8 | (14.1) | <0.0001a |
 | RMSSD | 1,203 | 33.9 | (31.7) | 597 | 32.5 | (32.2) | 606 | 35.1 | (31.2) | 0.16a |
 | SDNN | 1,203 | 76.7 | (27.1) | 597 | 77.5 | (26.0) | 606 | 76.0 | (28.2) | 0.32a |