Table 5. Comparison of the average concentrations of selected elements (mean ± SD) in blood of the coronary artery disease patients and controls based on gender, abode, food habits and smoking habits .

	Ca	Mg	Fe	Zn	Cu	Co	Mn	Cr	Cd	Pb
Female patients	72400 ± 42300	34100 ± 16400	485000 ± 80600	4500 ± 2100	1120 ± 890	0.642 ± 0.510	3.464 ± 1.765	1.641 ± 0.851	0.507 ± 0.210	57.35 ± 30.22
Male patients	99100 ± 53400	43400 ± 19600	460800 ± 78200	4600 ± 1960	1200 ± 940	0.725 ± 0.481	9.407 ± 7.152	1.621 ± 0.789	0.581 ± 0.254	58.61 ± 25.27
*p-value	0.038	0.041	0.824	0.921	0.874	0.751	0.0003	0.867	0.810	0.748
Female controls	79500 ± 52300	42000 ± 17900	418700 ± 76800	5260 ± 2600	893 ± 650	0.602 ± 0.572	5.641 ± 3.970	0.843 ± 0.321	0.381 ± 0.183	34.13 ± 15.22
Male controls	61800 ± 33900	30700 ± 11600	352800 ± 69700	4780 ± 2150	892 ± 360	0.570 ± 0.420	5.575 ± 3.420	0.745 ± 0.304	0.498 ± 0.167	44.29 ± 18.77
*p-value	0.044	0.047	0.624	0.736	0.951	0.685	0.813	0.705	0.046	0.047
Rural patients	110500 ± 74600	44700 ± 21300	493200 ± 112400	4660 ± 1870	1140 ± 820	0.618 ± 0.484	7.000 ± 5.310	1.747 ± 0.752	0.576 ± 0.216	44.59 ± 20.47
Urban patients	79700 ± 52800	37800 ± 17200	460100 ± 106700	4510 ± 1690	1180 ± 730	0.727 ± 0.471	7.147 ± 5.043	1.578 ± 0.410	0.543 ± 0.227	63.93 ± 23.18
*p-value	0.029	0.314	0.442	0.724	0.810	0.773	0.802	0.462	0.754	0.009
Rural controls	86400 ± 45700	40640 ± 18400	349700 ± 95300	5100 ± 2160	1125 ± 760	0.641 ± 0.364	2.481 ± 2.014	0.823 ± 0.542	0.314 ± 0.116	21.50 ± 11.65
Urban controls	65800 ± 30900	34530 ± 12300	388500 ± 98600	4970 ± 1580	842 ± 190	0.572 ± 0.310	6.287 ± 2.837	0.780 ± 0.442	0.476 ± 0.165	43.87 ± 19.20
*p-value	0.028	0.161	0.520	0.791	0.019	0.663	0.0007	0.581	0.009	0.0006
N-Veg. patients	107300 ± 69500	36600 ± 20400	487800 ± 124700	4800 ± 1940	1260 ± 500	0.659 ± 0.411	7.771 ± 5.812	1.952 ± 0.950	0.518 ± 0.193	64.62 ± 28.51
Vegetarian patients	78600 ± 46100	41700 ± 21800	460000 ± 116200	4410 ± 1810	1110 ± 480	0.713 ± 0.397	6.715 ± 4.920	1.447 ± 0.641	0.570 ± 0.185	55.35 ± 25.01
*p-value	0.037	0.305	0.427	0.503	0.661	0.390	0.220	0.041	0.916	0.097
N-Veg. controls	73350 ± 35600	36150 ± 16200	369600 ± 88400	4800 ± 2230	855 ± 310	0.480 ± 0.295	3.485 ± 1.823	0.591 ± 0.305	0.382 ± 0.092	36.24 ± 21.05
Vegetarian controls	66840 ± 21600	35260 ± 15700	389900 ± 91300	5120 ± 2530	919 ± 550	0.657 ± 0.250	7.108 ± 4.810	0.925 ± 0.455	0.500 ± 0.152	42.07 ± 20.67
*p-value	0.116	0.317	0.441	0.528	0.160	0.031	0.0005	0.006	0.038	0.137
N-Smok. patients	68000 ± 37200	34300 ± 13500	464500 ± 77600	4380 ± 2050	1120 ± 440	0.738 ± 0.455	3.525 ± 1.760	1.579 ± 0.710	0.566 ± 0.210	57.63 ± 30.20
Smoking patients	105400 ± 61900	44200 ± 16100	474400 ± 81500	4690 ± 2160	1206 ± 450	0.659 ± 0.462	10.02 ± 6.271	1.667 ± 0.682	0.542 ± 0.251	58.52 ± 26.31
*p-value	0.008	0.025	0.350	0.286	0.163	0.521	0.0004	0.273	0.861	0.722
N-Smok. controls	76700 ± 29500	39380 ± 20700	397300 ± 84900	5090 ± 2300	900 ± 370	0.515 ± 0.337	5.639 ± 3.045	0.713 ± 0.341	0.368 ± 0.142	32.03 ± 16.37
Smoking controls	60200 ± 24800	30760 ± 15600	361200 ± 80800	4860 ± 2160	882 ± 330	0.673 ± 0.325	5.559 ± 2.866	0.884 ± 0.382	0.563 ± 0.211	49.69 ± 22.14
*p-value	0.029	0.021	0.273	0.490	0.557	0.043	0.790	0.668	0.008	0.007

* p-value for two sample t-test.