Table 3.
Risk of coronary event (n=230) within five years from index clinic attendance in 1375 patients deemed appropriate for angiography comparing patients who did not undergo angiography with those who did
| Variable | No of events/No of patients (%) | Hazard ratio (95% CI) | ||||
|---|---|---|---|---|---|---|
| Angiography not received | Angiography received | Univariate | Multivariable* | P value | ||
| Age (years): | ||||||
| ≤49 | 23/70 (33) | 6/42 (14) | 3.02 (1.79 to 5.10) | 3.30 (1.70 to 6.43) | <0.001 | |
| 50-64 | 79/452 (17) | 25/217 (12) | 1.52 (0.91 to 2.53) | 1.90 (1.07 to 3.37) | 0.028 | |
| ≥65 | 81/433 (17) | 16/161 (10) | 1.83 (1.33 to 2.52) | 2.23 (1.37 to 3.62) | 0.001 | |
| Sex: | ||||||
| Men | 81/360 (20) | 34/270 (13) | 1.86 (1.12 to 3.09) | 1.90 (1.12 to 3.22) | 0.017 | |
| Women | 102/595 (16) | 13/150 (9) | 1.97 (1.24 to 3.14) | 2.75 (1.52 to 5.00) | 0.001 | |
| Ethnicity: | ||||||
| White | 142/742 (18) | 39/370 (11) | 1.88 (1.42 to 2.49) | 2.23 (1.46 to 3.39) | <0.001 | |
| South Asian | 41/213 (18) | 8/50 (16) | 1.22 (0.65 to 2.31) | 1.52 (0.68 to 3.39) | 0.307 | |
| Deprivation (fifths): | ||||||
| Less deprived (1-4) | 135/727 (17) | 37/360 (10) | 1.87 (1.38 to 2.53) | 2.31 (1.55 to 3.43) | <0.001 | |
| Most deprived (5) | 48/228 (21) | 10/60 (17) | 1.32 (0.95 to 1.84) | 1.48 (1.10 to 2.00) | 0.010 | |
*Each variable mutually adjusted for other variables (age, sex, ethnicity, deprivation) and for secondary prevention medication (aspirin, β blockers, statins) and abnormal exercise ECG variable).