Distribution of 504 men and 646 women, by altitude of residence and by demographic, lifestyle, clinical, and selected biochemical variables (three villages in Greece, in 1981)
| Variables | Men (%) | Women (%) | ||
|---|---|---|---|---|
| Mountainous | Lowland | Mountainous | Lowland | |
| village (A) | villages (B1+B2) | village (A) | villages (B1+B2) | |
| *Two tailed p values from t test between means or from χ2. †Lower educational level representing up to six years of schooling for men and illiteracy for women. | ||||
| Age (y) | ||||
| 25–34 | 2 (0.9) | 14 (4.9) | 22 (6.4) | 22 (7.3) |
| 35–44 | 27 (12.2) | 33 (11.7) | 41 (11.9) | 51 (16.9) |
| 45–54 | 52 (23.5) | 64 (22.6) | 88 (25.5) | 69 (22.9) |
| 55–64 | 50 (22.6) | 59 (20.8) | 73 (21.2) | 75 (24.9) |
| 65–74 | 53 (24.0) | 82 (29.0) | 78 (22.6) | 58 (19.3) |
| 75+ | 37 (16.7) | 31 (11.0) | 43 (12.5) | 26 (8.6) |
| p value* | 0.16 | 0.032 | ||
| Education | ||||
| lower† | 144 (65.2) | 195 (68.9) | 55 (15.9) | 67 (22.3) |
| higher | 77 (34.8) | 88 (31.1) | 290(84.1) | 234 (77.7) |
| p value* | 0.374 | 0.044 | ||
| Body weight in kg (quartiles) | ||||
| 1st (upper cut off) | 69 | 66 | 58 | 60 |
| 2nd (median) | 76 | 73 | 65 | 66 |
| 3rd (upper cut off) | 84 | 83 | 73 | 73 |
| p value* | 0.059 | 0.276 | ||
| Tobacco smoking | ||||
| never smoker | 127 (57.5) | 148 (52.3) | 343 (99.4) | 296 (98.3) |
| ever smoker | 94 (42.5) | 135 (47.7) | 2 (0.6) | 5 (1.7) |
| p value* | 0.286 | – | ||
| Alcohol consumption | ||||
| none | 29 (13.1) | 86 (30.4) | 289 (83.8) | 226 (75.1) |
| moderate (⩽2 glasses/day) | 104 (47.1) | 147 (51.9) | 55 (15.9) | 75 (24.9) |
| higher (>2 glasses/day) | 88 (39.8) | 50 (17.7) | 1 (0.3) | 0 (0) |
| p value* | <0.001 | 0.008 | ||
| Systolic blood pressure, in mm Hg (quartiles) | ||||
| 1st (upper cut off) | 125 | 120 | 120 | 120 |
| 2nd (median) | 140 | 135 | 140 | 130 |
| 3rd (upper cut off) | 160 | 150 | 160 | 150 |
| p value* | <0.001 | 0.002 | ||
| Blood glucose, in mg/100 ml (quartiles) | ||||
| 1st (upper cut off) | 77 | 75 | 78 | 75 |
| 2nd (median) | 85 | 88 | 85 | 85 |
| 3rd (upper cut off) | 94 | 102 | 92 | 100 |
| p value* | 0.451 | 0.011 | ||
| Total serum cholesterol, in mmol/l (quartiles) | ||||
| 1st (upper cut off) | 5.38 | 4.91 | 5.40 | 5.09 |
| 2nd (median) | 6.10 | 5.56 | 6.05 | 5.82 |
| 3rd (upper cut off) | 6.95 | 6.21 | 6.75 | 6.46 |
| p value* | <0.001 | <0.001 | ||
| Serum uric acid, in mg/100 ml (quartiles) | ||||
| 1st (upper cut off) | 5.3 | 4.5 | 4.0 | 4.0 |
| 2nd (median) | 6.1 | 5.3 | 4.7 | 4.8 |
| 3rd (upper cut off) | 7.2 | 6.4 | 5.7 | 5.8 |
| p value* | <0.001 | 0.638 | ||
| Serum triglycerides, in mg/100 ml (quartiles) | ||||
| 1st (upper cut off) | 87 | 70 | 74 | 62 |
| 2nd (median) | 121 | 100 | 98 | 80 |
| 3rd (upper cut off) | 176 | 145 | 134 | 110 |
| p value* | <0.001 | <0.001 | ||
| Packed cell volume% (quartiles) | ||||
| 1st (upper cut off) | 47 | 43 | 43 | 40 |
| 2nd (median) | 50 | 46 | 45 | 42 |
| 3rd (upper cut off) | 52 | 48 | 47 | 45 |
| p value* | <0.001 | <0.001 | ||