Table 3 Hypertension awareness and control status in the Tibetan population stratified by altitude
Outcome variable | Total | Altitude | P-value | ||||||
|---|---|---|---|---|---|---|---|---|---|
Low (2500–3499 m) | Middle (3500–4399 m) | High (4400–5300 m) | |||||||
N | % (95%CI) | N | % (95%CI) | N | % (95%CI) | N | % (95%CI) | ||
Awareness rate of hypertension among those discovered in this study | Â | Â | Â | Â | 0.045* | ||||
 Unaware (a) | 8554 | 12.6 (10.2–15.1) | 3757 | 14.7 (10.2–19.3) | 1767 | 16.9 (12.5–21.3) | 3030 | 9.6 (6.0–13.1) |  |
 Aware (b + c + d + e + f) | 59,098 | 87.3 (84.9–89.8) | 21,720 | 85.3 (80.7–89.8) | 8693 | 83.1 (78.7–87.5) | 28,684 | 90.4 (86.9–94.0) |  |
Hypertension control status among those previously diagnosed with hypertension | Â | Â | 0.150 | ||||||
 Uncontrolled (b + d) | 11,326 | 71.3 (65.4–77.2) | 6416 | 76.3 (67.4–85.2) | 1610 | 67.3 (56.8–77.8) | 3301 | 64.9 (54.6–75.2) |  |
 Controlled (c + e) | 4554 | 28.7 (22.8–34.6) | 1990 | 23.7 (14.7–32.6) | 783 | 32.7 (22.2–43.2) | 1782 | 35.1 (24.8–45.3) |  |
Hypertension control status among those not prescribed anti-hypertension medication | Â | 0.321 | |||||||
 Uncontrolled (b) | 2471 | 60.5 (49.0–72.0) | 1041 | 66.7 (48.9–84.5) | 494 | 70.9 (47.5–94.2) | 936 | 51.2 (34.0–68.5) |  |
 Controlled (c) | 1614 | 39.5 (28.0–51.0) | 521 | 33.3 (15.5–51.1) | 203 | 29.1 (5.8–52.5) | 890 | 48.8 (31.5–66.0) |  |
Hypertension control status among those who were prescribed anti-hypertension medication | Â | 0.302 | |||||||
 Uncontrolled (d) | 8855 | 75.1 (68.2–81.9) | 5374 | 78.5 (68.3–88.8) | 1116 | 65.8 (54.6–77.0) | 2364 | 72.6 (61.3–84.0) |  |
 Controlled (e) | 2940 | 24.9 (18.1–31.8) | 1469 | 21.5 (11.2–31.7) | 579 | 34.2 (23.0–45.4) | 892 | 27.4 (16.0–38.7) |  |
Effective coverage of HT screening |  | 28.7 (22.8–34.6) |  | 43.7 (30.8–56.5) |  | 17.2 (10.1–24.3) |  | 39.1 (27.5–50.8) | 0.154 |