Survival rates, tree condition ratings, and annual caliper growth for trees in sampled KIB NeighborWoods projects with and without signed watering agreements.
| # of neighborhoods | No signed agreement 11 | Signed agreement 7 | |
|---|---|---|---|
| Survivalz | Alive | 88.3% | 91.5% |
| Dead | 11.8% | 8.5% | |
| Total n | 698 | 375 | |
| Tree condition ratingy | Good | 83.7% | 85.0% |
| Fair | 12.9% | 12.9% | |
| Poor | 3.5% | 2.2% | |
| Total n | 319 | 186 | |
| Annual caliper growthx | Mean | 1.04 cm/yr | 1.27 cm/yr |
| Std. dev. | 0.55 cm/yr | 0.62 cm/yr | |
| Total n | 317 | 191 |
↵zNo significant differences: χ2: n = 1073, χ2 = 2.655, P = 0.103.
↵yNo significant differences: χ2: n = 505, χ2 = 0.688, P = 0.709.
↵xSignificant differences: GLM: n = 508, F = 18.68, P < 0.0001.
Note: Percentages may not add up to 100% due to rounding error. Analyses were performed for trees in neighborhoods with interview data.