Table 3.
Anthropometrics, blood pressure, and LV mass by SBP percentile groups - categorical variables: frequencies (percents); continuous variables: mean (SD) or geometric mean [1st quartile, 3rd quartile]
| Low SBP Pctl < 75th (N = 230) |
Mid 75th ≤ SBP Pctl < 90th (N = 48) |
High SBP Pctl ≥ 90th (N = 23) |
3-way comparis on p-value† |
Low vs. Mid p-value† |
Low- High p-value† |
|
|---|---|---|---|---|---|---|
| BMI (kg/m2) ‡ | 27.4 [22.1, 33.1] | 31.8 [26.6, 37.8] | 32.4 [25.7, 41.2] | 0.001 | 0.001 | 0.011 |
| BMI Z-score | 1.27 (1.07) | 1.87 (0.82) | 1.80 (0.82) | <.001 | <.001 | 0.011 |
|
Waist Circumference
(cm)‡ |
85.0 [72.0, 98.0] | 87.1 [80.0, 107] | 95.3 [80.0,112] | 0.085 | ||
| SBP (mmHg)‡ | 109.6 [104, 116] | 123.0 [120, 126] | 134.8 [129, 143] | |||
| SBP Z-score | −0.39 (0.68) | 0.95 (0.17) | 1.93 (0.51) | |||
| SBP Percentile‡ | 29.4 [18.2, 56.6] | 82.3 [78.7, 85.9] | 95.9 [93.2, 99.0] | |||
| DBP (mmHg)‡ | 61.5 [57.3, 67.0] | 63.9 [58.5, 67.7] | 69.8 [65.1, 73.7] | <.001 | 0.097 | <.001 |
| DBP Z-score | −0.41 (0.61) | −0.12 (0.69) | 0.29 (0.66) | <.001 | 0.022 | <.001 |
| DBP Percentile‡ | 3 0.1 [20.5, 50.1] | 38.9 [27.6, 57.1] | 54.2 [42.9, 81.4] | <.001 | 0.024 | <.001 |
|
Urinary Na (mEq/gm Cr)‡ |
80.1 [55.1, 128] | 77.4 [64.3, 118] | 82.3 [44.1,141] | 0.922 | ||
| Urinary Na/K Ratio‡ | 4.29 [2.97, 6.90] | 3.85 [2.47, 5.89] | 4.79 [3.00, 7.99] | 0.480 | ||
|
LVMI (g/[height in m]^2.7) |
33.20 (7.69) | 38.68 (8.24) | 40.58 (4.65) | <.001 | <.001 | <.001 |
| LVMI ≥ 95th pctl | 39( 18%) | 19 ( 43%) | 12(60%) | <.001 | <.001 | <.001 |
†
Fishers exact test (categorical) or ANOVA F-test (continuous): any groups different (3-way comparison test); adjustments made for multiple comparisons and false discovery rate
‡
Data natural log transformed: geometric means with [first quartile, third quartile] presented
Pctl: Percentile; HBP: hi blood pressure; SBP: systolic blood pressure; DBP: diastolic blood pressure; LVMI: left ventricular mass index