Table 1. Baseline characteristics of the intention-to-treat sample.
| Variable | Intervention n = 637 |
UC n = 1,097 |
|---|---|---|
| Age (years), mean (SD) | 56.6 (14.3) | 56.9 (13.7) |
| Female, n (%) | 373 (58.7)* | 633 (57.9)§ |
| SBP (mm Hg), mean (SD) | 140.5 (22.7) | 137.8 (22.2) |
| DBP (mm Hg), mean (SD) | 80.4 (13.7) | 80.6 (13.9) |
| Controlled hypertension, n (%) | 277 (43.5) | 549 (50.1) |
| Antihypertensive medication, n (%) | 242 (38.0) | 445 (40.6) |
| Body mass index (kg/m2), mean (SD) | 24.5 (4.8)† | 24.8 (5.0)¶ |
| Waist hip ratio, mean (SD) | 0.92 (0.09)¶ | 0.92 (0.09)§ |
| Physical activity per day (METS), mean (SD) | 928 (947)§ | 860 (896)§ |
| Fruit (weekly servings), mean (SD) | 3.3 (5.8)§ | 2.5 (3.3)‖ |
| Vegetables (weekly servings), mean (SD) | 11.3 (7.9) | 10.5 (6.4) |
| Teaspoons of salt added/day, mean (SD) | 0.05 (0.09)¶ | 0.06 (0.13) |
| Adding extra salt to food, n (%) | 227 (36.0)¶ | 410 (38.6) |
| Current smoking, n (%) | 96 (15.3)¶ | 165 (15.1)¶ |
| Current alcohol use, n (%) | 68 (10.8)¶ | 145 (13.3)¶ |
None of these baseline data were imputed. Control of hypertension is defined as SBP < 140 mm Hg and DBP < 90 mm Hg; control may be achieved with use of antihypertensive medications or changing lifestyle.
*One missing observation.
†Two missing observations.
‡Three missing observations.
§Four missing observations.
‖Five missing observations.
¶Six to eight missing observations. Salt added to food: 34 missing observations in UC. The data for servings of vegetables in Trivandrum had some errors that could not be resolved. Therefore, there are no data for weekly servings of vegetables in this region. These data on servings of vegetables rely on 329 observations in the intervention group and 668 in the UC group.
DBP, diastolic blood pressure; METS, metabolic equivalent tasks; SBP, systolic blood pressure; SD, standard deviation; UC, usual care.