Table 2.
Characteristics of groups dichotomized for effect of electrical neurostimulation
| Effective | Ineffective | P-value | |
| N = 28 | N = 32 | ||
| Age | 66 ± 10 | 67 ± 11 | 0.81 |
| BMI | 29 ± 5 | 27 ± 3 | 0.17 |
| Female | 5 (18) | 13 (41) | 0.06 |
| Culprit vessel | 0.84 | ||
| LAD | 14 (50) | 13 (41) | |
| CX | 5 (18) | 8 (25) | |
| RCA | 9 (32) | 11 (34) | |
| Number of diseased vessels | 0.01 | ||
| 1 vessel disease | 10 (36) | 16 (50) | |
| 2 vessel disease | 17 (61) | 8 (25) | |
| 3 vessel disease | 1 (4) | 8 (25) | |
| Rentrop class | 0.28 | ||
| 0 | 25 (89) | 27 (84) | |
| 1 | 0 | 3 (9) | |
| 2 | 2 (7) | 2 (6) | |
| 3 | 1 (4) | 0 | |
| B-blocker | 26 (93) | 23 (72) | 0.04 |
| Ca-blocker | 9 (32) | 16 (50) | 0.17 |
| Long acting nitrates | 9 (32) | 6 (19) | 0.24 |
| Ace inhibitor | 9 (32) | 10 (31) | 0.94 |
| Diuretics | 9 (32) | 7 (22) | 0.37 |
| Aspirin | 21 (75) | 26 (81) | 0.56 |
| Statins | 20 (71) | 22 (69) | 0.82 |
| Hypertension | 14 (50) | 12 (38) | 0.33 |
| Hypercholesterolaemia | 9 (32) | 5 (16) | 0.14 |
| Diabetes | 5 (18) | 5 (16) | 0.35 |
| Smoking | 7 (25) | 4 (13) | 0.22 |
| Family history | 6 (21) | 6 (19) | 0.80 |
Continuous variables are presented as mean ± SD, categorical variables are presented as number (%). BMI: body mass index; LAD: Left anterior descending artery; CX: circumflex artery; RCA: right coronary artery. Twenty eight patients with Pw/Pa ratio changes in excess of the mean group value were compared with 32 patients with Pw/Pa ratio changes less than the mean value.