Table 2.
Characteristics of ‘traditional’ and untreated twice told ‘hypertensives with non-hypertensive BP in three NHANES time periods.
| NHANES Time Period | 1999 – 2002 | 2003 – 2006 | 2007 – 2010 | |||
|---|---|---|---|---|---|---|
| Group | tHTN | ntHTN | tHTN | ntHTN | tHTN | ntHTN |
| Number, % (of all adults) | 3,150, 26.9 | 262, 2.8 | 3,107, 29.0 | 299, 3.1 | 4,150, 28.7 | 355, 2.9 |
| Age, yrs | 58.4 (57.3, 59.5) | 41.9 (40.1, 43.8) | 58.9 (57.5, 60.3) | 43.1 (41.0, 45.1) | 59.4 (58.8, 60.0) | 43.6 (41.8, 45.5) |
| Gender | ||||||
| Male,% | 46.4 (44.3, 48.6) | 49.0 (41.3, 56.7) | 48.9 (46.9, 51) | 49.9 (40.7, 59.1) | 48.3 (46.6, 49.9) | 46.7 (40.3, 53.1) |
| Female, % | 53.6 (51.4, 55.7) | 51.0 (43.3, 58.7) | 51.1 (49.0, 53.1) | 50.1 (40.9, 59.3) | 51.7 (50.1, 53.4) | 53.3 (46.9, 59.7) |
| Race | ||||||
| White, % | 73.1 (68.5, 77.2) | 72.4 (65.5, 78.4) | 74.9 (69.6, 79.6) | 76.4 (70.0, 81.8) | 72.3 (66.4, 77.6) | 66.3 (58.7, 73.1) |
| Black, % | 13.3 (10, 17.5) | 10.9 (7.1, 16.4) | 13.7 (10.5, 17.7) | 8.5 (5.6, 12.6) | 14.3 (11.1, 18.1) | 14.1 (10.5, 18.7) |
| Hispanic, % | 9.7 (6.2, 14.9) | 11.5 (8.2, 15.9) | 6.8 (4.5, 10.0) | 10.1 (7.1, 14.0) | 8.8 (6.1, 12.6) | 11.8 (8.2, 16.8) |
| Other Race, % | 3.9 (2.5, 5.8) | 5.3 (2.4, 11.2) | 4.6 (3.5, 6.0) | 5.1 (2.6, 9.5) | 4.6 (3.3, 6.3) | 7.7 (4.8, 12.2) |
| SBP, mmHg | 141.9‡ (140.7, 143.2) | 122.3 (120.1, 124.4) | 138.6 ‡ (137.6, 139.6) | 120.6 (118.8, 122.5) | 134.4‡ (133.7, 135.2) | 120.6 (119.2, 121.9) |
| DBP, mmHg | 77.5‡ (76.6, 78.4) | 74.1 (72.5, 75.6) | 75.0 (74.0, 76.1) † | 71.7 (70.0, 73.4) | 72.9 (71.9, 73.9)‡ | 71.7 (70.3, 73.0) |
| BP Category | ||||||
| Stage 2 | ||||||
| ≥160/≥100, % | 19.7 (17.3, 22.3) † | 16.1 (14.4, 18.1) ‡ | 10.6 (9.5, 11.8)‡ | |||
| Stage 1 | ||||||
| 140–159/90–99, % | 47.1 (45.1, 49.0) ‡ | 41.1 (38.4, 43.9) | 37.4 (35.2, 39.6)‡ | |||
| Pre-HTN | ||||||
| 120–139/80–89, % | 22.5 (20.3, 24.9) ‡ | 69.9 (63.0, 76.0) | 27.9 (25.8, 30.1) | 61.7 (54.5, 68.3) | 30.5 (28.7, 32.5)‡ | 63.0 (57.1, 68.6) |
| Normal | ||||||
| <120/<80, % | 10.7 (9.3, 12.3) ‡ | 30.1 (24.0, 37.0) | 14.8 (13.2, 16.6) ‡ | 38.3 (31.7, 45.5) | 21.5 (19.8, 23.2)‡ | 37.0 (31.4, 42.9) |
| BMI, kg/m2 | ||||||
| Mean | 30.1 (29.7, 30.5) | 29.8 (28.8, 30.9) | 30.3 (29.9, 30.6) † | 29.1 (28.1, 30.1) | 30.9 (30.7, 31.2)‡ | 30.3 (29.4, 31.3) |
| <25, % | 21.2 (19.4, 23.2) | 25.7 (19.9, 32.5) | 21.0 (19.2, 22.9) | 32.9 † (26.8, 39.7) | 19.0 (17.3, 20.8) | 20.5 (14.7, 27.7) |
| ≥30, % | 43.5 (41.2, 46.0) | 40.9 (33.4, 48.8) | 44.8 (42.4, 47.3) † | 38.6 (30.7, 47.1) | 48.8 (46.8, 50.8)‡ | 47.2 (40.7, 53.8) |
| Diabetes, % | 14.0 (12.8, 15.3) † | 8.1 (5.2, 12.3) | 16.6 (15.4, 17.7) ‡ | 9.1 (5.8, 14.2) | 20.5 (18.6, 22.5)‡ | 6.6 (4.6, 9.4) |
| CKD, % | 15.1 (13.7, 16.6) | 6.1 (2.7, 13.3) | 15.1 (13.1, 17.3) | 4.8 (2.6, 8.5) | 15.0 (13.8, 16.4) | 3.6 (1.9, 6.7) |
tHTN= ‘traditional’ hypertensive defined by BP ≥140/≥90 or non-hypertensive BP and self-report of prescribed medication treatment for hypertension
p<0.01;
p<0.001
The symbols on the column 1999–2002 indicate the p-value for comparison with 2003–2006 within tHTN or u2tHT-NHT group
The symbols on the column 2003–2006 indicate the p value for comparison with 2007–2010 within tHTN or u2tHT-NHT group
The symbols on the column 2007–2010 indicate the p value for comparison with 1999–2002 within tHTN or u2tHT-NHT group
Bold values in the u2tHT-NHT column indicate significant difference vs tHTN in same time period by non-overlapping 95% confidence limits.