Table 1.
Descriptive statistics of phenotypes and covariates considered by PA variables
| Characteristics | Quantitative | LQsplit | MEDsplit | SIEE | |||
|---|---|---|---|---|---|---|---|
| inactive | active | inactive | active | inactive | active | ||
| Sample size | 6,705 | 1,913 | 4,792 | 3,495 | 3,210 | 1,913 | 2,071 |
| Age (years) | 49.1 ± 13.6 | 47.5 ± 12.7 | 49.7 ± 13.9 | 48.1±13.2 | 50.1±13.9 | 47.5 ± 12.7 | 50.1 ± 14.0 |
| % Male | 46.8 | 46.6 | 46.9 | 45.0 | 48.8 | 46.6 | 52.2 |
| % Taking anti- | 18.9 | 16.8 | 19.8 | 18.1 | 19.8 | 16.8 | 18.9 |
| hypertensive medications | |||||||
| SBP (mmHg) | 123.4 ± 19.2 | 121.9 ± 18 | 123.8 ± 19.6 | 122.4±19.5 | 124.1±18.8 | 121.9 ±18 | 124.0 ± 19.4 |
| DBP (mmHg) | 76.74 ± 10.4 | 77 ± 10.3 | 76.7 ± 10.4 | 76.8±10.4 | 76.6±10.4 | 77 ± 10.3 | 76.4 ±10.4 |
Abbreviations: %, percent; SBP, systolic blood pressure; DBP, diastolic blood pressure; LQsplit, created by splitting Quantitative by the lower quartile; MEDsplit, created by splitting Quantitative by the median; SIEE, created by selecting individuals with Quantitative values in the lower and upper quartiles and excluding individuals intermediate between the lower and upper quartile.
Sample size shown is for individuals with SBP data and is the basis for other descriptive statistics shown; descriptive statistics are very similar for DBP with sample size differing by a single individual (N=6,704).