Table 1.
Distribution of baseline characteristics of the cohort (TLGS; 1999-2018)
| Characteristics | Male (n=3,709) | Female (n=4,341) | Total (n=8,050) |
|---|---|---|---|
| Age (yr) | 47.76±12.82 | 46.10±11.38 | 46.89±12.11 |
| Incident CHD (first event) | 663 (8.2) | 455 (5.6) | 1,118 (13.8) |
| Education level (yr) | |||
| Did not graduate | 326 (4.3) | 375 (4.9) | 701 (9.2) |
| Less than high school (≤ 9) | 1,378 (18.1) | 2,100 (27.5) | 3,478 (45.6) |
| High school (10-12) | 1,156 (15.2) | 1,170 (15.3) | 2,326 (30.5) |
| More than high school (>12) | 660 (8.7) | 467 (6.1) | 1,127 (14.8) |
| History of cigarette smoking | |||
| No history | 1,933 (24.1) | 4,057 (50.5) | 6,003 (74.6) |
| Positive history | 1,770 (22.0) | 275 (3.4) | 2,047 (25.4) |
| Smoking status | |||
| Never | 1,263 (15.7) | 2,949 (36.6) | 4,212 (52.3) |
| Former | 674 (8.4) | 109 (1.4) | 783 (9.7) |
| Current | 1,096 (13.6) | 168 (2.1) | 1,264 (15.7) |
| Secondhand | 670 (8.3) | 1,121 (13.9) | 1,791 (22.2) |
| Age at smoking initiation (yr) | 20.65±10.23 | 26.07±13.53 | 21.50±10.98 |
| ≤17 | 599 (33.6) | 47 (2.6) | 647 (36.2) |
| >17 | 952 (53.4) | 185 (10.4) | 1,138 (63.8) |
| History of using non-cigarette forms of tobacco | |||
| No history | 2,699 (33.8) | 3,987 (49.7) | 6,700 (83.5) |
| Positive history | 983 (12.3) | 336 (4.2) | 1,320 (16.5) |
| History of type 2 diabetes | |||
| No diabetes | 2,376 (26.5) | 2,622 (36.7) | 4,229 (63.2) |
| Pre-diabetes | 830 (9.2) | 974 (13.6) | 1,804 (22.8) |
| Diabetes | 476 (5.1) | 633 (8.9) | 1,109 (14.0) |
| No. of cigarette per day (n) | 10 [5-20] | 12 [5-20] | 8 [5-11] |
| Smoking cessation (yr) | 11 [5-20] | 11 [4-20] | 13 [5-22] |
| SBP (mmHg) | 121.26±18.61 | 121.05±20.29 | 121.14±19.53 |
| DBP (mmHg) | 78.32 ± 11.04 | 78.65±10.91 | 78.50±10.97 |
| LDL-C (mg/dL) | 132.05±36.17 | 139.57±39.89 | 136.08±38.40 |
| HDL-C (mg/dL) | 37.84±9.29 | 44.60±11.16 | 41.47±10.87 |
| Non-HDLC (mg/dL) | 173.11±41.92 | 177.61±47.71 | 175.65±45.35 |
| Body mass index (kg/m2) | 26.29±3.96 | 28.53±4.79 | 27.49±4.56 |
Values are presented as mean±standard deviation or number (%) or median [range].
TGLS, Tehran Lipid and Glucose Study; CHD, coronary heart disease; SBP, systolic blood pressure; DBP, diastolic blood pressure; LDL-C, low-density lipoprotein cholesterol; HDL-C, high-density lipoprotein cholesterol.