Table 2.

The percentage of responding communities in Illinois having four components of a tree management program.

Tree management program component	Community size/10³ (%)								Kruskal-Wallis test
Tree management program component	< 2.5	2.5–5.0	5.0–10.0	10.0–25.0	25.0–50.0	50.0–100.0	>100.0	All	Kruskal-Wallis test
Tree commission or board	8	26	26	33	38	50	40	18	64.0^{^*}
Street or shade tree ordinance	16	46	57	80	92	100	100	38	217.6^*
Tree inventory	12	11	24	28	67	47	60	20	18.0^*
Department/employee responsible for public trees	44	63	74	93	100	100	100	60	116.9^*

↵* Differences between population size groups significant at p < 0.05, using Monte Carlo estimates of exact Kruskal-Wallis test statistic.