Characteristics of all subjects comparing initial and follow up tests
| Variable name | Sample size | Initial test (95% CI) | Follow up test (95% CI) | Test difference (95% CI) | p value |
|---|---|---|---|---|---|
| *The mean and standard error are calculated only for subjects with FSBP% ⩾30 | |||||
| % smokers | 204 | 61.76 | 34.80 | 26.96 | <0.0001 |
| % subjects with FSBP% = 0 | 204 | 35.78 | 20.59 | −15.19 | <0.0001 |
| FSBP% | 204 | 49.99±5.39 | 63.40±4.82 | 14.32±4.96 | <0.001 |
| FSBP% ⩾30* | 120 | 77.38±3.27 | 82.20±2.41 | −4.82±3.63 | 0.01 |
| Baseline arm temp (°C) | 202 | 32.20±0.20 | 32.10±0.20 | −0.10±0.25 | 0.42 |
| Baseline finger temp (°C) | 201 | 29.43±0.39 | 30.12±0.41 | 0.69±0.49 | <0.01 |
| Finger temp (°C) at 10°C Cooling | 202 | 24.65±0.45 | 25.57±0.49 | 0.92±0.55 | <0.01 |
| Finger temp (°C) at 30°C rewarmed | 201 | 24.64±0.47 | 25.23±0.51 | 0.58±0.59 | 0.05 |
| Finger temp°C at 10 min recovery | 177 | 27.12±0.59 | 27.99±0.61 | 0.86±0.65 | 0.01 |
| Finger temperature index (FTI) | 177 | 0.92±0.47 | 0.44±0.45 | −0.47±0.57 | 0.10 |
| Rewarming index 1 | 201 | −0.01±0.20 | 0.33±0.18 | 0.34±0.25 | 0.01 |
| Rewarming index 2 | 201 | 1.00±0.01 | 0.99±0.01 | −0.014±0.01 | 0.01 |