Table 2.
Characteristics of Traditional and Untreated Twice‐Told Hypertensives With Nonhypertensive BP in 3 NHANES Time Periods
| NHANES Time Period | 1999–2002 | 2003–2006 | 2007–2010 | |||
|---|---|---|---|---|---|---|
| Group | tHTN | ntHTN | tHTN | ntHTN | tHTN | ntHTN |
| No. (%) | 3150 (26.9) | 262 (2.8) | 3107 (29.0) | 299 (3.1) | 4150 (28.7) | 355 (2.9) |
| Age, y | 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) |
| Sex | ||||||
| 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, mm Hg | 141.9 a (140.7–143.2) | 122.3 (120.1–124.4) | 138.6 a (137.6–139.6) | 120.6 (118.8–122.5) | 134.4 a (133.7–135.2) | 120.6 (119.2–121.9) |
| DBP, mm Hg | 77.5 a (76.6–78.4) | 74.1 (72.5–75.6) | 75.0 (74.0–76.1) b | 71.7 (70.0–73.4) | 72.9 (71.9–73.9) a | 71.7 (70.3–73.0) |
| BP category Stage 2 | ||||||
| ≥160/≥100, % | 19.7 (17.3–22.3) b | 16.1 (14.4–18.1) a | 10.6 (9.5–11.8) a | |||
| Stage 1 | ||||||
| 140–159/90–99, % | 47.1 (45.1–49.0) a | 41.1 (38.4–43.9) | 37.4 (35.2–39.6) a | |||
| Pre‐HTN | ||||||
| 120–139/80–89, % | 22.5 (20.3–24.9) a | 69.9 (63.0–76.0) | 27.9 (25.8–30.1) | 61.7 (54.5–68.3) | 30.5 (28.7–32.5) a | 63.0 (57.1–68.6) |
| Normal | ||||||
| <120/<80, % | 10.7 (9.3–12.3) a | 30.1 (24.0–37.0) | 14.8 (13.2–16.6) a | 38.3 (31.7–45.5) | 21.5 (19.8–23.2) a | 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) b | 29.1 (28.1–30.1) | 30.9 (30.7–31.2) a | 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) b | 38.6 (30.7–47.1) | 48.8 (46.8–50.8) a | 47.2 (40.7–53.8) |
| Diabetes, % | 14.0 (12.8–15.3) b | 8.1 (5.2–12.3) | 16.6 (15.4–17.7) a | 9.1 (5.8–14.2) | 20.5 (18.6–22.5) a | 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) |
Abbreviations: CKD, chronic kidney disease; BMI, body mass index; DBP, diastolic blood pressure; HTN, hypertension; ntHTN, nontraditional hypertensive; NHANES, National Health and Nutrition Examination Surveys; SBP, systolic blood pressure; tHTN, traditional hypertensive (defined by blood pressure [BP] ≥140/≥90 mm Hg or nonhypertensive BP and self‐report of prescribed medication treatment for hypertension); u2tHT‐NHT, untreated, twice‐told patients with nonhypertensive BP. The symbols in the column 1999–2002 indicate the P value for comparison with 2003–2006 within tHTN or u2tHT‐NHT group. The symbols in the column 2003–2006 indicate the P value for comparison with 2007–2010 within tHTN or u2tHT‐NHT group. The symbols in the column 2007–2010 indicate the P value for comparison with 1999–2002 within tHTN or u2tHT‐NHT group. Bold values in the ntHTN column indicate significant difference vs tHTN in same time period by nonoverlapping 95% confidence limits. a P<.001. b P<.01.