Table 2.
Descriptive characteristics of RHD valve surgery patients stratified by Indigenous status
| Aboriginal and/or Torres Strait Islander | Non-Indigenous Australian | P value | |
|---|---|---|---|
| N = 174 | N = 1210 | ||
| Age (years) | 37.4 | 65.1 | <0.001 |
| (Median (IQR)) | (26.9 – 49.1) | (55.5 – 72.8) | |
| Sex (% female) | 67.2 | 64.0 | 0.411 |
| (95% CI) | (59.7 – 74.2) | (61.3 – 66.8) | |
| Concomitant CABG | 9.8 | 22.9 | <0.001 |
| (%, 95% CI) | (5.8 – 15.2) | (20.6 – 25.4) | |
| Area of residence | |||
| Remote and very remote | 54.1 | 1.6 | <0.001 |
| (% RA category 3 & 4, 95% CI) | (46.3 – 61.7) | (1.0 – 2.4) | |
| Inner and outer regional | 39.5 | 33.3 | 0.108 |
| (% RA category 1 & 2, 95% CI) | (32.2 – 47.3) | (30.7 – 36.1) | |
| Major city | 6.4 | 65.1 | <0.001 |
| (%, 95% CI) | (3.2 – 11.2) | (62.3 – 67.8) | |
| Pre-surgery comorbidities | |||
| Diabetes | 24.3 | 19.8 | 0.167 |
| (%, 95% CI) | (18.1 – 31.4) | (17.5 – 22.1) | |
| Elevated Creatinine | 2.9 | 2.7 | 0.912 |
| (% Cr > =200 μmol/L) (95% CI) | (0.9 – 6.6) | (1.9 – 3.8) | |
| Chronic kidney disease (% eGFR < 60 mL/min/1.73 m2) | 14.4 | 33.5 | <0.001 |
| (95% CI) | (9.5 – 20.5) | (30.8 – 36.2) | |
| Hypertension | 37.0 | 55.3 | <0.001 |
| (%, 95% CI) | (29.8 – 44.7) | (52.4 – 58.1) | |
| Previous smoking | 64.2 | 51.0 | <0.001 |
| (%, 95% CI) | (56.5 – 71.3) | (48.2 – 53.9) | |
| Current smoking | 55.4 | 19.7 | <0.001 |
| (%, 95% CI) | (45.7 – 64.8) | (16.7 – 23.1) | |
| Pre-operative status | |||
| NYHA classes III & IV | 47.1 | 53.1 | 0.138 |
| (%, 95% CI) | (39.5 – 54.8) | (50.3 – 56.0) | |
| Atrial fibrillation | 33.3 | 41.6 | 0.039 |
| (%, 95% CI) | (26.4 – 40.9) | (38.8 – 44.4) | |
| LVEF >45% | 83.9 | 84.7 | 0.784 |
| (%, 95% CI) | (77.6 – 89.0) | (82.6 – 86.7) | |
| LVEF 30 – 45% | 11.5 | 10.8 | 0.792 |
| (%, 95% CI) | (7.2 – 17.2) | (9.1 – 12.7) | |
| LVEF <30% | 3.4 | 2.1 | 0.249 |
| (%, 95% CI) | (1.3 – 7.4) | (1.3 – 3.1) | |
| Previous procedures | |||
| Valve surgery | 16.1 | 13.1 | 0.287 |
| (%, 95% CI) | (11.0 – 22.4) | (11.3 – 15.2) | |
| PBV | 29.5 | 19.5 | 0.124 |
| (%, 95% CI) | (16.8 – 45.2) | (15.3 – 24.3) |