|  | Model 1 OR (95% CI) | Model 2 OR (95% CI) | Δ OR % | Model 3 OR (95% CI) | Δ OR % | Model 4 OR (95% CI) | Δ OR % | Model 5 OR (95% CI) | Δ OR % |
---|---|---|---|---|---|---|---|---|---|---|
Income | High | 1 (reference) | 1 (reference) | Â | 1 (reference) | Â | 1 (reference) | Â | 1 (reference) | Â |
 | Middle | 1.79 (0.89–3.60) | 1.60 (0.77–3.33) | 23.44 | 1.70 (0.82–3.50) | 10.83 | 1.81 (0.90–3.66) | 3.18 | 1.76 (0.83–3.75) | 3.06 |
 | Low | 2.16 (0.82–5.68) | 1.68 (0.59–4.76) | 41.72 | 2.18 (0.79–5.99) | 1.72 | 1.50 (0.51–4.39) | 56.90 | 2.97 (1.07–8.23) | 69.57 |