Baseline characteristics of followed up and non-followed up men (TLGS 1999–2012)
| Selected variables | Followed up (n=2885) | Non-followed up (n=1592) | p Value* |
|---|---|---|---|
| Age (year) | 41.8 (13.7)† | 43.4 (16.2) | 0.001 |
| 2-hour postchallenge plasma glucose (mmol/L) | 5.7 (1.7) | 5.6 (1.7) | 0.42 |
| Fasting plasma glucose (mmol/L) | 5.0 (0.5) | 5.0 (0.5) | 0.10 |
| Wrist circumference (cm) | 17.6 (0.9) | 17.6 (0.9) | 0.06 |
| Waist-to-hip ratio | 0.91 (0.07) | 0.91 (0.07) | 0.19 |
| Waist-to-height ratio | 0.52 (0.06) | 0.52 (0.07) | 0.24 |
| Cholesterol-to-HDL ratio | 5.5 (1.7) | 5.4 (1.7) | 0.014 |
| Mean arterial blood pressure (mm Hg) | 90.7 (11.3) | 91.4 (12.7) | 0.07 |
| History of hospitalisation until now | 1425 (49.4) | 813 (51.1) | 0.28 |
| Family history of diabetes in first-degree relatives | 724 (25.1) | 360 (22.6) | 0.07 |
| Exposed to secondhand smoke at home or at work | 910 (31.5) | 461 (29.0) | 0.07 |
| Goitre size | |||
| Grade 0 | 2085 (72.3) | 1155 (72.6) | 0.75 |
| Grade 1 | 545 (18.9) | 307 (19.3) | |
| Grade 2 | 255 (8.8) | 128 (8.1) | |
| Use of aspirin during the last month | 321 (11.1) | 194 (12.1) | 0.33 |
| Education | |||
| Level 1 (illiterate) | 93 (3.2) | 103 (6.5) | 0.001 |
| Level 2 (≤5 years) | 498 (17.3) | 314 (19.7) | |
| Level 3 (6-12 years) | 1738 (60.2) | 884 (55.5) | |
| Level 4 (13-16 years) | 483 (16.7) | 255 (16.0) | |
| Level 5 (>16 years) | 73 (2.5) | 36 (2.3) | |
| Participating in the lifestyle intervention group | 1230 (42.6) | 740 (46.5) | 0.01 |
*Continuous and categorical variables were compared by Student's t-test and χ2, respectively.
†Figures are either mean (SD) or N (%) for continuously and categorically distributed variables, respectively, in the data set with no missing values (after imputation of missing values). Data were collected from the TLGS study between 1999 and 2012.
HDL, high-density lipoprotein; TLGS, Tehran Lipid and Glucose Study.