Cardiol Res

Cardiology Research, ISSN 1923-2829 print, 1923-2837 online, Open Access

Article copyright, the authors; Journal compilation copyright, Cardiol Res and Elmer Press Inc

Journal website https://www.cardiologyres.org

Original Article

Volume 1, Number 1, December 2010, pages 15-19

The Role of Unknown Risk Factors in Myocardial Infarction

**Table 1.** Age and Sex Distribution in MI Cases
Age Group	Total N (%)	Female N (%)	Male N (%)
20 - 29	3 (1.7%)	0 (0.0%)	3 (100%)
30 - 39	7 (3.9%)	1 (14.3%)	6 (85.7%)
40 - 49	23 (12.8%)	5 (21.7%)	18 (78.3%)
50 - 59	48 (26.7%)	11 (22.9%)	37 (77.08%)
60 - 69	58 (32.1%)	20 (34.5%)	38 (65.5%)
70 - 79	34 (18.9%)	15 (44.1%)	19 (55.9%)
80 - 89	7 (3.9%)	1 (14.3%)	6 (85.9%)
Sum	180 (100%)	53 (29.4%)	127 (70.6%)

Table 1. Age and Sex Distribution in MI Cases

Age Group

Total N (%)

Female N (%)

Male N (%)

20 - 29

3 (1.7%)

0 (0.0%)

3 (100%)

30 - 39

7 (3.9%)

1 (14.3%)

6 (85.7%)

40 - 49

23 (12.8%)

5 (21.7%)

18 (78.3%)

50 - 59

48 (26.7%)

11 (22.9%)

37 (77.08%)

60 - 69

58 (32.1%)

20 (34.5%)

38 (65.5%)

70 - 79

34 (18.9%)

15 (44.1%)

19 (55.9%)

80 - 89

7 (3.9%)

1 (14.3%)

6 (85.9%)

Sum

180 (100%)

53 (29.4%)

127 (70.6%)

**Table 2.** Smoking in Different Age Groups
Age Group	Less than 10 Years Smoking N (%)	10 - 20 Years Smoking N (%)	More than 20 Years Smoking N (%)
20 - 29	2 (14.3%)	0 (0.0%)	0 (0.0%)
30 - 39	1 (7.1%)	1 (7.7%)	2 (4.2%)
40 - 49	3 (21.4%)	4 (30.8%)	4 (8.3%)
50 - 59	2 (14.3%)	4 (30.8%)	12 (25%)
60 - 69	3 (21.4%)	2 (15.4%)	18 (37.5%)
70 - 79	3 (21.4%)	1 (7.7%)	11 (22.9%)
80 - 89	0 (0.0%)	1 (7.7%)	1 (2.08%)
Sum	14 (18.4%)	13 (17.1%)	48 (63.1%)

Table 2. Smoking in Different Age Groups

Age Group

Less than 10 Years Smoking N (%)

10 - 20 Years Smoking N (%)

More than 20 Years Smoking N (%)

20 - 29

2 (14.3%)

0 (0.0%)

30 - 39

1 (7.1%)

1 (7.7%)

2 (4.2%)

40 - 49

3 (21.4%)

4 (30.8%)

4 (8.3%)

50 - 59

2 (14.3%)

4 (30.8%)

12 (25%)

60 - 69

3 (21.4%)

2 (15.4%)

18 (37.5%)

70 - 79

3 (21.4%)

1 (7.7%)

11 (22.9%)

80 - 89

0 (0.0%)

1 (7.7%)

1 (2.08%)

Sum

14 (18.4%)

13 (17.1%)

48 (63.1%)

**Table 3.** Frequency of Stress in Different Age Groups
Age Group	Number of Patients With Stress	Percentage
20 - 29	3	2.4
30 - 39	6	4.9
40 - 49	19	15.4
50 - 59	34	27.6
60 - 69	37	30.08
70 - 79	20	16.3
80 - 89	4	3.3
Sum	123	68.3

Table 3. Frequency of Stress in Different Age Groups

Age Group

Number of Patients With Stress

Percentage

20 - 29

2.4

30 - 39

4.9

40 - 49

15.4

50 - 59

27.6

60 - 69

30.08

70 - 79

16.3

80 - 89

3.3

Sum

123

68.3

**Table 4.** Physical Activity in Different Age Groups
Age Group	Number of Patients With Physical Activity	Percentage
20 - 29	0	0.0
30- 39	2	6.06
40 - 49	5	15.2
50 - 59	14	42.4
60 - 69	7	21.2
70 - 79	5	15.2
80 - 89	0	0.0

Table 4. Physical Activity in Different Age Groups

Age Group

Number of Patients With Physical Activity

Percentage

20 - 29

0.0

30- 39

6.06

40 - 49

15.2

50 - 59

42.4

60 - 69

21.2

70 - 79

15.2

80 - 89

0.0

**Table 5.** Ear Canal Hair and Helical Fold in Different Age Groups
Age Group	Hairy Ear Canal N (%)	Helical Fold N (%)	Both N (%)
20 - 29	-	0 (0.0%)	-
30 - 39	2 (3%)	0 (0.0%)	1 (5.9%)
40 - 49	9 (13.4%)	0 (0.0%)	1 (5.9%)
50 - 59	19 (28.3%)	4 (50%)	1 (5.9%)
60 - 69	19 (28.3%)	3 (37.5%)	7 (41.2%)
70 - 79	15 (22.4%)	1 (12.5%)	6 (35.3%)
80 - 89	3 (4.5%)	0 (0.0%)	1 (5.9%)
Sum	67 (37.2%)	8 (4.4%)	17 (9.4%)

Table 5. Ear Canal Hair and Helical Fold in Different Age Groups

Age Group

Hairy Ear Canal N (%)

Helical Fold N (%)

Both N (%)

20 - 29

0 (0.0%)

30 - 39

2 (3%)

0 (0.0%)

1 (5.9%)

40 - 49

9 (13.4%)

0 (0.0%)

1 (5.9%)

50 - 59

19 (28.3%)

4 (50%)

1 (5.9%)

60 - 69

19 (28.3%)

3 (37.5%)

7 (41.2%)

70 - 79

15 (22.4%)

1 (12.5%)

6 (35.3%)

80 - 89

3 (4.5%)

0 (0.0%)

1 (5.9%)

Sum

67 (37.2%)

8 (4.4%)

17 (9.4%)

**Table 6.** Frequency of DM in Different Age Groups
Age Group	Total Diabetic Patients N (%)	DM for 0 - 10 Years N (%)	DM for 10 - 20 Years N (%)	DM of More than 20 Years N (%)
20-29	0 (0.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)
30-39	1 (2.6%)	1 (3.4%)	0 (0.0%)	0 (0.0%)
40-49	2 (5.3%)	2 (6.9%)	0 (0.0%)	0 (0.0%)
50-59	11 (28.9%)	10 (34.5%)	1 (12.5%)	0 (0.0%)
60-69	19 (50.0%)	12 (41.4%)	6 (75%)	1 (100%)
70-79	5 (13.1%)	4 (3.8%)	1 (12.5%)	0 (0.0%)
80-89	0 (0.0)	0 (0.0%)	0 (0.0%)	0 (0.0%)
Sum	38 (31.1%)	29 (76.3%)	8 (21.5%)	1 (2.6%)

Table 6. Frequency of DM in Different Age Groups

Age Group

Total Diabetic Patients N (%)

DM for 0 - 10 Years N (%)

DM for 10 - 20 Years N (%)

DM of More than 20 Years N (%)

20-29

0 (0.0%)

30-39

1 (2.6%)

1 (3.4%)

0 (0.0%)

40-49

2 (5.3%)

2 (6.9%)

0 (0.0%)

50-59

11 (28.9%)

10 (34.5%)

1 (12.5%)

0 (0.0%)

60-69

19 (50.0%)

12 (41.4%)

6 (75%)

1 (100%)

70-79

5 (13.1%)

4 (3.8%)

1 (12.5%)

0 (0.0%)

80-89

0 (0.0)

0 (0.0%)

Sum

38 (31.1%)

29 (76.3%)

8 (21.5%)

1 (2.6%)

**Table 7.** Frequency of Htn in Different Age Groups
Age Group	Number of Hypertensive Cases	Percentage
20 - 29	0	0.0
30 - 39	0	0.0
40 - 49	4	6.3
50 - 59	13	20.6
60 - 69	26	41.3
70 - 79	17	26.9
80 - 89	3	4.8
Sum	63	35

Table 7. Frequency of Htn in Different Age Groups

Age Group

Number of Hypertensive Cases

Percentage

20 - 29

0.0

30 - 39

0.0

40 - 49

6.3

50 - 59

20.6

60 - 69

41.3

70 - 79

26.9

80 - 89

4.8

Sum

**Table 8.** Cholesterol Level in Different Age Groups
Age Group	Chol ≥ 200mg/dl (%)	Chol < 200mg/dl (%)
20 - 29	0	100
30 - 39	0	100
40 - 49	17	83
50 - 59	17	83
60 - 69	16	84
70 - 79	15	85
80 - 89	0	100

Table 8. Cholesterol Level in Different Age Groups

Age Group

Chol ≥ 200mg/dl (%)

Chol < 200mg/dl (%)

20 - 29

100

30 - 39

100

40 - 49

50 - 59

60 - 69

70 - 79

80 - 89

100

**Table 9.** LDL Level in Different Age Groups
Age Group	LDL ≥ 160mg/dl (%)	LDL < 160mg/dl (%)
20 - 29	0	100
30 - 39	0	100
40 - 49	35	65
50 - 59	29	71
60 - 69	20	80
70 - 79	27	73
80 - 89	31	69

Table 9. LDL Level in Different Age Groups

Age Group

LDL ≥ 160mg/dl (%)

LDL < 160mg/dl (%)

20 - 29

100

30 - 39

100

40 - 49

50 - 59

60 - 69

70 - 79

80 - 89

**Table 10.** Family History of IHD in Different Age Groups
Age Group	Frequency of Positive FH for IHD	Percentage
20 - 29	2	3.6
30 - 39	5	9.09
40 - 49	9	16.4
50 - 59	16	29.09
60 - 69	16	29.09
70 - 79	7	12.7
80 - 89	0	-
Sum	55	30.5

Table 10. Family History of IHD in Different Age Groups

Age Group

Frequency of Positive FH for IHD

Percentage

20 - 29

3.6

30 - 39

9.09

40 - 49

16.4

50 - 59

29.09

60 - 69

29.09

70 - 79

12.7

80 - 89

Sum

30.5

**Table 11.** Frequency of Patients Without Combination Risk Factors for IHD (Htn, HPL, DM and Smoking) in Different Age Groups
Age Group	Patients Without Any Risk Factor	Percentage
20 - 29	3	100
30 - 39	7	14
40 - 49	23	17
50 - 59	48	29
60 - 69	58	18
70 - 79	34	35
80 - 89	7	-

Table 11. Frequency of Patients Without Combination Risk Factors for IHD (Htn, HPL, DM and Smoking) in Different Age Groups

Age Group

Patients Without Any Risk Factor

Percentage

20 - 29

100

30 - 39

40 - 49

50 - 59

60 - 69

70 - 79

80 - 89