Table 1.

Demographic characteristics of participants by categories of dietary phytochemical index: Tehran Lipid and Glucose Study

Demographic characteristics	Dietary phytochemical index
	Men				Women
	Q1	Q2	Q3	Q4	Q1	Q2	Q3	Q4
Dietary phytochemical index
Range	< 19.6	19.6-27.0	27.1-35.5	> 35.5	< 21.8	21.8-29.6	29.7-37.9	> 37.9
Mean	16.5 ± 0.5	24.7 ± 0.5	31.4 ± 0.5	41.1 ± 0.5	19.1 ± 0.4	26.8 ± 0.4	34.5 ± 0.4	43.2 ± 0.4
Age 2006-2008 (year)	35.1 ± 0.8	39.2 ± 0.8	42.9 ± 0.8	48.4 ± 0.8*	36.6 ± 0.7	37.2 ± 0.7	39.3 ± 0.7	45.2 ± 0.7*
Physical activity (MET-h/week)
Job activity	38.9 ± 4.7	27.1 ± 4.5	31.4 ± 4.5	23.1 ± 4.7	23.2 ± 2.2	24.6 ± 2.2	23.4 ± 2.2	20.6 ± 2.3
Leisure time activity	10.4 ± 1.3	13.4 ± 1.3	9.5 ± 1.3	13.0 ± 1.3	8.5 ± 0.8	8.2 ± 0.7	10.0 ± 0.7	9.0 ± 0.8
Total	49.4 ± 4.9	40.5 ± 4.7	41.0 ± 4.7	36.1 ± 4.9	31.7 ± 2.4	32.8 ± 2.4	33.4 ± 2.4	29.6 ± 2.4
Current smoker (%)	24.9	24.5	24.2	18.5	1.8	2.2	0.4	3.3
Education status (%)
Illiterate	1.4	0.9	1.0	1.4	2.2	2.6	3.3	4.4
Primary education	10.0	7.1	0.0	11.1	0.0	10.7	0.0	0.0
Academic education	80.0	85.8	78.6	66.7	92.0	82.2	95.0	100.0
Advanced academic education	10.0	7.1	21.4	22.2	8.0	7.1	5.0	0.0

Mean ± SEM;

^*P < 0.05 (chi-square test or age-adjusted general linear models were used);

SEM: Standard error of mean