Quartiles of annual mortality rates for different tree planting locations. When a given study reported a range of years or a range of mortality values, we used the lower annual mortality value in the “lower” row and the higher annual mortality value in the “higher” row. Studies that did not specify the location or did not examine mortality rates were left out, so the “number of studies” reflects only those used in calculations.
| Planting location | Number of studies | Lower or higher annual mortality results used | Annual mortality (%) range and quartile | ||||
|---|---|---|---|---|---|---|---|
| Min. | 1st | Median | 3rd | Max. | |||
| Street | 20 | lower | 0.00 | 1.59 | 2.54 | 4.60 | 68.47 |
| higher | 0.00 | 1.60 | 2.61 | 5.45 | 68.47 | ||
| Mixed | 14 | lower | 0.00 | 2.22 | 4.30 | 6.77 | 30.00 |
| higher | 0.00 | 2.99 | 5.10 | 7.49 | 30.00 | ||
| Residential yards | 3 | lower | 3.82 | 4.21 | 4.60 | 5.60 | 6.60 |
| higher | 3.82 | 4.21 | 4.60 | 5.60 | 6.60 | ||
| Park | 2 | lower | 1.28 | 1.74 | 2.19 | 2.65 | 3.10 |
| higher | 1.28 | 1.74 | 2.19 | 2.65 | 3.10 | ||