Healthcare cost concentration and social determinants of health
| Income group | Patients | Mean spending | Median spending |
|---|---|---|---|
| Q1 (low) | 1,250 | $51,820 | $14,798 |
| Q2 | 1,250 | $266,025 | $148,986 |
| Q3 | 1,250 | $291,041 | $148,041 |
| Q4 (high) | 1,250 | $146,922 | $118,706 |
Spending rises sharply from Q1 to Q2, is highest in Q3, and then decreases in Q4. This is not a simple increasing or decreasing relationship between income and spending.