a trend toward significancep = 0.0827
There was a trend toward significance on the basis of occupation ( p = 0.0827) with farmers showing the highest levels (mean ± SD, 13.34 ± 8.29 ng/mL), followed by industrial workers (8.68 ± 5.46 ng/mL) and professionals (7.84 ± 6.14 ng/mL).