Table 1.
Baseline characteristics and prevalence of hypertension in the population of the Tehran Cohort Study.
|
| |||||
|---|---|---|---|---|---|
| TOTAL POPULATION* n = 8296 |
NORMAL/OPTIMAL† n = 3962 (48.0) |
HIGH NORMAL† n = 1007 (12.2) |
HYPERTENSION† n = 3288 (39.8) |
P-VALUE‡ | |
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| Age, year, mean (SD) | 53.8 (12.75) | 48.60 (10.9) | 53.4 (11.77) | 60.2 (12.16) | <0.001 |
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| Age, year, n (%) | <0.001 | ||||
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| 35–44 | 2329 (28.1) | 1693 (73.1) | 262 (11.3) | 360 (15.6) | |
|
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| 45–54 | 2209 (26.6) | 1190 (54.1) | 312 (14.2) | 696 (31.7) | |
|
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| 55–64 | 1967 (23.7) | 722 (36.8) | 233 (11.9) | 1008 (51.3) | |
|
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| 65–74 | 1222 (14.7) | 265 (21.8) | 152 (12.5) | 800 (65.7) | |
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| ≥75 | 569 (6.9) | 92 (16.3) | 48 (8.5) | 424 (75.2) | |
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| Sex, n (%) | 0.013 | ||||
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| Men | 3818 (46.0) | 1794 (47.2) | 507 (13.3) | 1500 (39.5) | |
|
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| Women | 4478 (54.0) | 2168 (48.7) | 500 (11.2) | 1788 (40.1) | |
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| Marital status, n (%) | 0.663 | ||||
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| Married | 8210 (99.2) | 3929 (48.0) | 1001 (12.2) | 3258 (39.8) | |
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| Non-married | 86 (0.8) | 31 (47.0) | 6 (9.1) | 29 (43.9) | |
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| Ethnicity, n (%) | 0.224 | ||||
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| Fars | 4026 (48.8) | 1877 (46.6) | 510 (12.7) | 1639 (40.7) | |
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| Azari | 2447 (29.7) | 1187 (48.5) | 290 (11.9) | 970 (39.6) | |
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| Gilak | 330 (4.0) | 166 (50.3) | 34 (10.3) | 130 (39.4) | |
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| Lor | 318 (3.9) | 175 (55.0) | 28 (8.8) | 115 (36.2) | |
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| Kurd | 193 (2.3) | 98 (50.8) | 26 (13.5) | 69 (35.8) | |
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| Mixed | 680 (8.2) | 331 (48.7) | 79 (11.6) | 270 (39.7) | |
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| Other | 206 (2.5) | 102 (49.5) | 32 (15.5) | 72 (35.0) | |
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| Immigrants/Refugees | 51 (0.6) | 23 (45.1) | 8 (15.7) | 20 (39.2) | |
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| Education, year, n (%) | <0.001 | ||||
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| Illiterate | 585 (7.1) | 141 (24.1) | 51 (8.7) | 393 (67.2) | |
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| (1–5) | 841 (10.2) | 286 (34.1) | 98 (11.7) | 455 (54.2) | |
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| (6–12) | 4306 (52.0) | 2070 (48.2) | 559 (13.0) | 1662 (38.7) | |
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| >12 | 2541 (30.7) | 1461 (57.6) | 299 (11.8) | 776 (30.6) | |
|
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| Body mass index, kg/m2, n (%) | <0.001 | ||||
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| <20 | 227 (2.8) | 158 (69.6) | 25 (11.0) | 44 (19.4) | |
|
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| 20–24.9 | 2079 (25.3) | 1251 (60.5) | 243 (11.7) | 575 (27.8) | |
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| 25–29.9 | 3426 (41.7) | 1661 (48.6) | 438 (12.8) | 1320 (38.6) | |
|
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| 30–34.9 | 1796 (21.9) | 680 (37.9) | 221 (12.3) | 892 (49.7) | |
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| ≥35 | 683 (8.3) | 193 (28.3) | 76 (11.1) | 413 (60.6) | |
|
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| Diabetes, n (%) | <0.001 | ||||
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| |||||
| No | 6965 (84.4) | 3640 (52.2) | 895 (12.8) | 2430 (34.9) | |
|
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| Yes | 1292 (15.6) | 322 (24.9) | 112 (8.7) | 858 (66.4) | |
|
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| Hyperlipidemia, n (%) | <0.001 | ||||
|
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| No | 5562 (67.4) | 3122 (56.1) | 759 (13.6) | 1681 (30.2) | |
|
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| Yes | 2694 (32.6) | 839 (31.1) | 248 (9.2) | 1607 (59.7) | |
|
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| Chronic kidney disease, n (%) | <0.001 | ||||
|
| |||||
| No | 8187 (99.1) | 3948 (48.2) | 1005 (12.3) | 3234 (39.5) | |
|
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| Yes | 71 (0.9) | 14 (19.7) | 2 (2.8) | 55 (77.5) | |
|
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| Serum Creatinine, mg/dL, median (25th, 75th percentile) | 0.80 (0.70, 0.94) | 0.79 (0.69, 0.90) | 0.80 (0.70, 0.93) | 0.84 (0.71, 1.00) | <0.001 |
|
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| Tobacco user, n (%) | <0.001 | ||||
|
| |||||
| Current | 1594 (19.3) | 911 (57.2) | 185 (11.6) | 498 (31.2) | |
|
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| Former | 333 (4.0) | 110 (33.0) | 40 (12.0) | 183 (55.0) | |
|
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| Never | 6325 (76.6) | 2937 (46.4) | 782 (12.4) | 2606 (41.2) | |
|
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| Opium consumption, n (%) | 0.309 | ||||
|
| |||||
| No | 7856 (94.7) | 3750 (48.1) | 948 (12.2) | 3091 (39.7) | |
|
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| Yes | 440 (5.3) | 194 (44.4) | 58 (13.3) | 185 (42.3) | |
|
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| Alcohol consumption, n (%) | 0.001 | ||||
|
| |||||
| No | 7555 (91.0) | 3540 (47.3) | 919 (12.3) | 3024 (40.4) | |
|
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| Yes | 741 (9.0) | 402 (54.6) | 84 (11.4) | 250 (34.0) | |
|
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| Physical activity, n (%) | <0.001 | ||||
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| Low | 1449 (17.6) | 539 (37.3) | 127 (8.8) | 779 (53.9) | |
|
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| Intermediate | 4764 (58.0) | 2311 (48.6) | 592 (12.5) | 1845 (38.9) | |
|
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| High | 2000 (24.4) | 1082 (54.2) | 282 (14.1) | 632 (31.7) | |
|
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* Categorical data are reported as number (percentage in the column).
† Categorical data are reported as number (percentage in a row).
‡ P-value is calculated between normal/optimal, high normal, and hypertension subgroups.