Table 4.

Percentage of responding communities in Illinois having an employee with various levels of training responsible for public tree management and care.

Employee’s level of training	Community size/10³ (%)								Kruskal-Wallis test
Employee’s level of training	< 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
College or technical degree	3	3	17	14	39	81	80	15	65.94^{^*}
ISA certification	0	8	12	17	50	75	100	15	96.42^{^*}
Other training	19	23	73	65	97	94	80	47	118.5^{^*}
No training	81	73	37	39	6	6	0	55	107.2^{^*}

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