Table 1.

Descriptive demographic and socio-economic characteristics of Iranian households in Tehran province

Variable	Statistical outputs for continuous factors
	Minimum	Maximum	Mean	sd
I. Continuous
(a) Age of head of household (years)	25	89	48·2	12·26
(b) Size of household	1	10	3·69	1·47
(c) Number of employed members	0	6	1·61	0·92
(d) Number of educated members	0	6	0·99	1·03
(e) Number of disease members	0	8	0·63	1·04
(f) Number of male children	0	5	0·36	0·69
(g) Number of female children	0	5	0·43	0·68