Table 2.
Participant Characteristic |
Number of events |
Time periods at risk* |
% developing hypertension at 1.6 years |
Relative risk† (95% CI) |
---|---|---|---|---|
Overall | 849 | 7,619 | 11.1% | NA |
Race-ethnicity | ||||
Caucasian | 351 | 3,514 | 10.0% | 1 (reference) |
African American | 225 | 1,449 | 15.5% | 1.22 (1.05 – 1.41) |
Hispanic | 188 | 1,634 | 11.5% | 1.10 (0.94 – 1.29) |
Asian | 85 | 1,022 | 8.3% | 0.99 (0.81 – 1.22) |
Sex | ||||
Male | 403 | 3,580 | 11.3% | 1 (reference) |
Female | 446 | 4,039 | 11.0% | 1.11 (0.97 – 1.26) |
Systolic blood pressure, mmHg | ||||
<110 | 96 | 3,148 | 3.1% | 1 (reference) |
110 – 114 | 75 | 1,126 | 6.7% | 1.98 (1.45 – 2.71) |
115 – 119 | 121 | 1,081 | 11.2% | 2.97 (2.26 – 3.91) |
120 – 124 | 106 | 768 | 13.8% | 3.42 (2.55 – 4.59) |
125 – 129 | 119 | 584 | 20.4% | 4.85 (3.69 – 6.39) |
130 – 134 | 153 | 491 | 31.2% | 7.10 (5.40 – 9.34) |
135 – 139 | 179 | 421 | 42.5% | 9.49 (7.27 – 12.4) |
Diastolic blood pressure, mmHg by Age |
||||
Age<50 years | ||||
< 70 | 17 | 659 | 2.6% | 1 (reference) |
70 – 74 | 11 | 223 | 4.9% | 1.17 (0.57 – 2.42) |
75 – 79 | 29 | 193 | 15.0% | 2.46 (1.39 – 4.34) |
80 – 84 | 14 | 94 | 14.9% | 1.75 (0.90 – 3.41) |
84 – 89 | 12 | 35 | 34.3% | 2.86 (1.48 – 5.50) |
Age 50 to 59 years | ||||
< 70 | 68 | 1553 | 4.4% | 1.51 (0.90 – 2.55) |
70 – 74 | 43 | 673 | 6.4% | 1.35 (0.77 – 2.37) |
75 – 79 | 69 | 497 | 13.9% | 2.06 (1.20 – 3.53) |
80 – 84 | 51 | 253 | 20.2% | 2.29 (1.32 – 3.95) |
84 – 89 | 24 | 68 | 35.3% | 2.86 (1.58 – 5.17) |
Age 60 to 69 years | ||||
< 70 | 113 | 1,153 | 9.8% | 2.44 (1.46 – 4.05) |
70 – 74 | 51 | 472 | 10.8% | 1.87 (1.08 – 3.23) |
75 – 79 | 53 | 274 | 19.3% | 2.41 (1.39 – 4.17) |
80 – 84 | 34 | 141 | 24.1% | 2.48 (1.41 – 4.39) |
84 – 89 | 10 | 35 | 28.6% | 2.48 (1.26 –4.91) |
Age ≥70 years | ||||
< 70 | 150 | 903 | 16.6% | 3.13 (1.88 – 5.20) |
70 – 74 | 53 | 217 | 24.4% | 3.06 (1.81 – 5.20) |
75 – 79 | 25 | 113 | 22.1% | 2.56 (1.40 – 4.69) |
80 – 84 | 17 | 51 | 33.3% | 2.94 (1.57 – 5.51) |
84 – 89 | 5 | 12 | 41.7% | 3.21 (1.61 – 6.37) |
Body mass index, kg/m2 | ||||
<25 | 244 | 2,846 | 8.6% | 1 (reference) |
25–29 | 324 | 2,995 | 10.8% | 1.06 (0.91 – 1.23) |
≥ 30 | 281 | 1,778 | 15.8% | 1.35 (1.15 – 1.59) |
Parental history of hypertension | ||||
0 | 497 | 4,384 | 11.3% | 1 (reference) |
1 | 279 | 2,626 | 10.6% | 1.04 (0.91 – 1.19) |
2 | 73 | 609 | 12.0% | 1.11 (0.89 – 1.37) |
Current smoking | ||||
No | 726 | 6,571 | 11.1% | 1 (reference) |
Yes | 123 | 1,048 | 11.7% | 1.15 (0.97 – 1.36) |
Participants could contribute up to three periods at risk (i.e., between baseline and visit 2, visit 2 and visit 3, and visit 3 and visit 4).
All variables listed in table were included in a single multivariable Poisson regression model.