Table 2. Baseline characteristics in British women and men aged 60–79 years without cardiovascular disease by categories of hypertension amongst men. N = 3042.
| Characteristic | N complete data | Mean (SD) for continuous variables or N (%) for binary variables in: | P for heterogeneity across categories* | |||
| Normotensive | Untreated HT | Treated and poorly controlled HT | Treated and well controlled HT | |||
| Number in each category | 3042 | 887 | 1497 | 545 | 113 | - |
| Age (years) | 3042 | 67.0 (5.1) | 68.5 (5.5) | 69.3 (5.3) | 68.4 (5.3) | <0.0005 |
| Systolic BP (mmHg) | 3042 | 124.6 (10.9) | 160.9 (17.6) | 165.9 (18.9) | 125.9 (11.5) | <0.0005$ |
| Diastolic BP (mmHg) | 3042 | 77.2 (7.0) | 89.9 (10.0) | 91.3 (10.1) | 78.8 (6.0) | <0.0005$ |
| Body mass index (kg/m2) | 3036 | 26.1 (3.6) | 26.7 (3.5) | 27.7 (3.5) | 28.2 (4.2) | <0.0005$ |
| Fasting glucose* | 2906 | 5.6 (4.1, 7.8) | 5.8 (3.9, 8.6) | 6.1 (3.8, 9.8) | 6.2 (3.6, 10.8) | <0.0005$ |
| Fasting Insulin* | 2895 | 7.4 (2.2, 24.7) | 7.9 (2.3, 26.6) | 9.0 (2.5, 32.7) | 9.7 (2.8, 33.9) | <0.0005$ |
| Fasting HDLc | 2886 | 1.3 (0.2) | 1.4 (0.4) | 1.3 (0.3) | 1.2 (0.3) | <0.0005$ |
| Fasting LDLc | 2865 | 3.9 (0.9) | 4.0 (1.0) | 3.9 (1.0) | 3.9 (1.0) | <0.0005 |
| Fasting Triglyceride* | 2903 | 1.5 (0.6, 3.9) | 1.6 (0.6, 4.1) | 1.7 (0.7, 4.5) | 1.8 (0.6, 4.9) | <0.0005 |
| Current smoker (%)† | 2836 | 183 (22%) | 266 (19%) | 88 (18%) | 20 (19%) | 0.2 |
| No regular exercise (%) | 2972 | 413 (48%) | 717 (49%) | 314 (59%) | 46 (42%) | <0.0005 |
| Manual childhood social class (%)$$ † | 2753 | 621 (78%) | 1089 (80%) | 401 (81%) | 88 (82%) | 0.5 |
| Manual adult social class (%)$$ † | 3035 | 462 (52%) | 774 (52%) | 290 (53%) | 57 (51%) | 0.9 |
| On ≥2 blood-pressure drugs (%) | N/A*** | - | - | 173 (32%) | 28 (25%) | - |
| Years on blood-pressure lowering drugs (median (IQR)) | N/A | N/A | N/A | 6 (0,7) | 3 (0,7) | - |
In this table results are only presented for those with complete data, and for those with non-missing hypertensive status; HT = Hypertensive.
*i.e. the p-value tests whether the distribution differs between any of the groups and has 3 degrees of freedom.
**For these variables geometric means and 95% confidence intervals are presented.
$
Using robust standard errors to account for differences in variances between groups.
$$
Manual social class defined as social class III manual/class IV/class V/armed forces.
†
Included as categorical covariable with all levels (never/ex/current smoker, all levels of social class) in analysis.
***Response not required if not on drugs.