Table 7.

Relationships of dependent and independent variables in chi-square test of importance (percentage).

Variable	Certified Arborist		Worked as arborist		Worked as urban forester
Variable	Yes	No	Yes	No	Yes	No
Arboriculture	73	59	68	62	69	63
Planning	39	42	36	45	42	39
Safety	85	55^*	78	59^*	76	64
Tree preservation	90	87	88	90	85	83
Tree structure	89	81	90	79^**	85	83
Urban forest	61	48	56	51	75	47^**

Variable	Years in arboriculture			Teaching		Residence			Region
Variable	1–10	11–20	21–30	University	2-year college	City	Suburb	Town	West	Midwest	East	South
Arboriculture	65	62	67	60	67	64	57	72	60	60	73	76
Planning	42	33	42	49	28^*	58	20	29^**	27	42	39	54
Safety	67	62	79	63	81	73	78	66	57	68	83	70
Tree preservation	89	81	97	90	89	92	81	91	86	92	90	88
Tree structure	83	76	93	85	80	88	75	84	77	91	85	85
Urban forest	56	50	54	57	42	60	33	56	64	54	57	44