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. 2020 Apr 21;22(4):e14595. doi: 10.2196/14595

Table 2.

Incidence of hypertension by intervention group and dose-response to intervention 5 years after randomization.


New cases of hypertension during follow-up Regression modela RR (95% CI) P value

No (n=142) Yes (n=50)
Intention-to-treat analysis

Control 69 (70.4%) 29 (29.6%) 1 (Reference)

Intervention 73 (77.7%) 21 (22.3%) 0.76 (0.45-1.28) .30
Dose-response analysis

Control 69 (70.4%) 29 (29.6%) 1 (Reference)

<50% (<6 calls) 20 (66.7%) 10 (33.3%) 1.33 (0.64-2.75) .44

≥50% (≥6 calls) 53 (82.8%) 11 (17.2%) 0.55 (0.29-1.04) .07

aModels were adjusted by age and sex, as randomization was stratified for these variables.