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Table 2 Crude effect of the intervention on hypertension control in registered hypertensive patients. Cardenas and Santiago, Cuba, 2012–2014

From: Effectiveness of a provider and patient-focused intervention to improve hypertension management and control in the primary health care setting in Cuba: a controlled before-after study

Study arm

Controlled hypertension

Intervention effect

Baseline

Endline

% difference

Difference of differencesa

OR

n/N (%; 95% CI)

n/N (%; 95% CI)

(95% CI)

(95% CI)

(95% CI)

Control

399/635 (62.5; 60.3–64.8)

423/699 (60.5; 55.8–65.1)

−2.4 (−6.5–1.6)

Reference

Reference

Provider intervention

170/349 (48.7; 45.3–52.1)

239/354 (67.6; 56.0–77.4)

18.8 (11.4–26.3)

21.3 (12.8–29.8)

2.43 (1.63–3.62)

Provider and patient intervention

203/348 (58.4; 55.7–61.0)

250/348 (71.8; 69.6–73.9)

13.5 (13.0–14.0)

16.0 (11.9–20.1)

2.02 (1.71–2.40)

  1. All estimates and CIs are corrected for clustering in BWGs using GEE
  2. OR Odds Ratio, CI Confidence Interval
  3. a coefficients of the “study arm by survey round” interaction term with no control for confounding (see text)