Characteristics of patients with and without ABPI ≤ 0.90, and comparison of their preventive treatment.
| ABPI | |||
|---|---|---|---|
| ≤ 0.90 (n = 30) | > 0.90 (n = 333) | P-valuea | |
| Sex: male | 21 (70) | 152 (46) | 0.011 |
| Mean (SD) age, years | 70.1 (6.3) | 70.0 (5.9) | 0.922 |
| Edinburgh questionnaireb | |||
| Definite claudication | 10 (34) | 9 (3) | |
| Atypical claudication | 1 (4) | 11 (3) | <0.001 |
| No claudication | 17 (61) | 296 (94) | |
| Rose anginab | |||
| Yes | 2 (7) | 26 (8) | 0.802 |
| No | 28 (93) | 301 (92) | |
| Random glucose, mmol/lb | |||
| ≤ 7.0 | 27 (90) | 292 (88) | |
| 7.1–11.0 | 2 (7) | 37 (11) | |
| 10-year CVD riskb,c | |||
| >20% | 19 (66) | 162 (49) | 0.087 |
| 10 year CHD risk, %b,c | |||
| ≥30 | 2 (7) | 5 (2) | |
| 20 to <30 | 9 (31) | 39 (12) | |
| 15 to <20 | 4 (14) | 60 (18) | |
| <15 | 14 (48) | 227 (69) | - |
| Blood pressure, mmHg | |||
| <140/85 | 16 (53) | 157 (47) | 0.516 |
| Mean (SD) systolic | 139(19) | 139 (17) | 0.801 |
| Mean (SD) diastolic | 78 (14) | 78 (11) | 0.943 |
| Number of blood pressure drugs | |||
| 0 or 1 | 9 (30) | 141 (42) | |
| 2 | 14 (47) | 121 (36) | 0.395 |
| 3–5 | 7 (23) | 71 (21) | |
| Cholesterol, mmol/l | |||
| <5.0 | 13/29 (45) | 110/331 (33) | 0.207 |
| Mean (SD) cholesterol | 5.2 (1.1) | 5.4 (1.0) | 0.538 |
| Statins prescribed | 13 (43) | 75 (23) | 0.011 |
| On aspirin or clopidogrel | 15 (50) | 96 (29) | 0.016 |
| Smoking status | |||
| Never smoked (self report) | 7 (23) | 186 (56) | |
| Ex-smoker (self report) | 16 (53) | 113 (34) | |
| Current smoker (self report) | 7 (23) | 34 (10) | 0.001 |
| Exhaled CO >6.0 ppmd | 8 (27) | 37 (11) | 0.013 |
| Exercise (Godin score) | |||
| ≥24 | 2 (7) | 70 (21) | 0.058 |
| Median (IQR) | 9 (0–21) | 18 (2–21) | 0.020 |
| Diet | |||
| <33% energy from fat | 14 (47) | 174 (52) | 0.558 |
| Mean (SD) % energy from fat | 33.6 (5.2) | 32.8 (5.9) | 0.474 |
| 5 or more daily portions fruit and vegetables | 3 (10) | 38 (11) | 0.815 |
| Mean (SD) daily portions fruit and vegetables | 2.7 (1.4) | 2.8 (1.7) | 0.717 |
Values are numbers (percentages within columns) unless otherwise stated. CHD = coronary heart disease; CO = carbon monoxide; CVD = cardiovascular disease; IQR = interquartile range; SD = standard deviation.
↵a P-values from the χ2 (proportions), independent samples t-test (means), or Mann–Whitney U test (Godin score).
↵b Missing values were: Edinburgh questionnaire n = 19; Rose angina n = 4; glucose n = 2; Framingham scores n = 3.
↵c Calculated using Framingham equations.
↵d Bedfont Micro-Smokerlyzer, Bedfont Scientific Ltd, UK.