Table 1.

Comparison of the frequency distribution of demographic variables between the two study groups.

Variable		Experimental group N = 200		Control group N = 200		P-value
		Number	Percentage	Number	Percentage
Monthly household income	Under 20 million Rod rials	73	36.50	65	32.50	0.234
	20 to 40 million rials	95	47.50	92	46
	Over 40 million rials	32	16	43	21.50
father's education level	Illiterate	3	1.5	2	1	0.216
	Elementary	32	18	28	14
	Middle	42	21	40	20
	High School	74	37	83	41.50
	University	49	24.5	47	23.5
Mother's education level	Illiterate	1	0.5	1	0.5	0.244
	Elementary	36	18	32	16
	Middle	48	24	52	26
	High School	83	41.5	78	39
	University	32	16	37	18.5
Father's occupation	Farmer	40	20	44	22	0.286
	Self-employment	67	34	56	28
	Employee	58	29	62	31
	Other items	34	17	38	19
Mother's occupation	Housewife	157	78.5	161	80.5	0.366
	Employed	43	21.5	39	19.5
Skin cancer history in the family	Have	13	6.5	10	5	0.428
	Do not have	187	93.5	190	95