Table 1.
Selected characteristics of all adult subjects who had BP measured in three NHANES time periods.
| NHANES | 1999–2002 | 2003–2006 | 2007–2010 |
|---|---|---|---|
| Number | 10,006 | 9,930 | 11,723 |
| Age, yrs | |||
| Mean | 44.1 (43.5, 44.8) | 45.2 (44.2, 46.2) | 46.0 (45.4, 46.7) ‡ |
| Gender | |||
| Male,% | 48.4 (47.4, 49.3) | 48.6 (47.6, 49.5) | 48.5 (47.7, 49.3) |
| Female, % | 51.6 (50.7, 52.6) | 51.4 (50.5, 52.4) | 51.5 (50.7, 52.3) |
| Race | |||
| White, % | 71.0 (67.2, 74.6) | 72.2 (67.6, 76.4) | 68.8 (63.5, 73.6) |
| Black, % | 10.5 (8.4, 13.2) | 11.1 (8.7, 14.1) | 11.3 (9.3, 13.7) |
| Hispanic, % | 13.8 (10.2, 18.4) | 11.4 (9.0, 14.5) | 13.7 (10.4, 17.8) |
| Other Race, % | 4.6 (3.5, 6.1) | 5.2 (4.3, 6.2) | 6.2 (5.0, 7.7) |
| SBP, mmHg | |||
| All subjects | 122.1 (121.3, 123.0) | 121.9 (121.2, 122.6)‡ | 120.4 (119.8, 121.0)‡ |
| DBP, mmHg | |||
| All subjects | 72.3 (71.7, 72.9) ‡ | 70.5 (70.0, 71.0) | 69.9 (69.1, 70.7) ‡ |
| ≥160/≥100, % | 5.3 (4.6, 6.1) | 4.7 (4.2, 5.3) ‡ | 3.2 (2.9, 3.5) ‡ |
| 140–159/90–99, % | 12.7 (11.8, 13.6) | 12.0 (10.9, 13.1) | 11.2 (10.4, 12.0) † |
| 120–139/80–89, % | 36.3 (35.0, 37.6) | 36.1 (34.8, 37.5) | 35.0 (33.5, 36.5) |
| <120/<80, % | 45.7 (43.8, 47.7) | 47.2 (45.4, 49.0) † | 50.7 (48.9, 52.4) ‡ |
| SBP, mmHg | |||
| Non-Hypertensive | 114.8 (114.2, 115.5) | 115.1 (114.6, 115.5) | 114.5 (113.9, 115.0) |
| DBP, mmHg | |||
| Non-Hypertensive | 70.4 (69.9, 70.9) ‡ | 68.6 (68.2, 69.0) | 68.6 (67.9, 69.4) ‡ |
| 120–139/80–89, % | 41.4 (39.5, 43.4) | 39.5 (37.4, 41.6) | 36.9 (35.0, 38.9) ‡ |
| <120/<80, % | 58.6 (56.6, 60.5) | 60.5 (58.4, 62.6 | 63.1 (61.1, 65.0) ‡ |
| BMI, kg/m2 | |||
| Mean | 27.8 (27.6, 28.1) | 28.2 (27.9, 28.5) | 28.5 (28.3, 28.7) ‡ |
| <25.0 | 36.5 (34.6, 38.3) | 34.3 (32.5, 36.1) | 32.3 (30.7, 33.9) ‡ |
| 25.0–29.9 | 34.0 (32.4, 35.7) | 33.3 (31.9, 34.8) | 33.4 (32.2, 34.7) |
| 30, % | 29.5 (27.7, 31.4) | 32.4 (30.4, 34.4) | 34.3 (32.9, 35.8) ‡ |
| Diabetes, % | 6.2 (5.5, 6.9) † | 7.3 (6.6, 8.1) † | 8.9 (8.1, 9.7) ‡ |
| CKD, % | 5.6 (5.1, 6.1) | 6.0 (5.3, 6.8) | 6.1 (5.5, 6.8) |
Abbreviations: S=systolic; D=diastolic; BP=blood pressure, BMI=body mass index; CKD=chronic kidney disease (estimated GFR <60 ml/1.7m2/min).
†
p<0.01;
‡
p<0.001
Symbols on column (a) 1999–2002 indicate p-value vs. 2003–2006 (b) 2003–2006 vs. 2007–2010 and (c) 2007–2010 vs. 1999–2002