Table 2 Crude percentage and adjusted percentage (95% CI) of patients with blood pressure under control in intervention and control groups, urban and rural, at different time of follow-up, adjusting for the baseline blood pressure, age, BMI and duration of hypertension

From: Effects and cost-effectiveness of a guideline-oriented primary healthcare hypertension management program in Beijing, China: results from a 1-year controlled trial

 

Urban

Rural

 

Intervention (107/140) a

Control (84/140)

Intervention (132/140)

Control (113/140)

Month of follow-up

%

Adjusted % (95% CI)

%

Adjusted % (95% CI)

%

Adjusted % (95% CI)

%

Adjusted % (95% CI)

PP analysis

 3

45.8

41.0 (29.8, 53.1)

38.1

34.8 (23.2, 48.6)

30.3

16.5 (10.4, 25.1)

10.6

4.3 (2.2, 8.4)*

 6

57.0

56.9 (44.6, 68.3)

47.6

49.0 (35.3, 62.8)

50.0

45.3 (33.2, 58.0)

22.1

14.7 (8.6, 23.9)**

 9

72.9

78.1 (67.8, 85.8)

52.4

56.2 (42.2, 69.3)

68.2

75.9 (65.1, 84.2)

29.2

24.4 (15.4, 36.4)**

 12

74.8

80.3 (70.5, 87.4)

47.6

49.0 (35.3, 62.8)**

73.5

82.9 (73.9, 89.3)

27.4

21.7 (13.5, 33.2)**

 Ptrend

 

<0.0001

 

0.0455

 

<0.0001

 

<0.0001

 Peffect

0.0089

<0.0001

 Pinteraction

0.0017

0.0001

ITT analysis

 3

42.1

33.6 (24.1, 44.8)

34.3

28.2 (19.4, 39.0)

30.7

16.4 (10.4, 24.8)

10.0

3.8 (2.0, 7.0)**

 6

53.6

51.4 (39.8, 62.8)

40.7

38.3 (27.8, 50.1)

50.0

44.9 (33.0, 57.4)

21.4

13.6 (8.3, 21.6)**

 9

70.0

76.5 (66.6, 84.2)

43.6

43.1 (32.0, 55.0)**

67.1

74.6 (63.6, 83.1)

27.1

21.2 (13.7, 31.4)**

 12

70.7

77.5 (67.8, 84.9)

40.0

37.2 (26.8, 48.9)**

72.9

82.4 (73.4, 88.8)

27.9

22.3 (14.5, 32.7)**

 Ptrend

 

<0.0001

 

0.0799

 

<0.0001

 

<0.0001

 Peffect

0.0003

<0.0001

 Pinteraction

<0.0001

0.0002

  1. Abbreviations: BMI, body mass index; CI, confidence interval; ITT, intention-to-treat; PP, per-protocol; SBP, systolic blood pressure.
  2. The logistic mixed models were employed to adjust for baseline SBP, age, BMI and the duration of hypertension. Ptrend: P-values for the linear trend of time of the adjusted hypertension control rate in intervention and control groups, separately. Peffect: P-values for the overall effect of intervention in the study period. Pinteraction: P-values for the difference of slopes of time linear trend between intervention and control. *The significance between intervention and control groups in each time points: 0.01<P<0.05; **P<0.01.
  3. aNumber in the brackets are sample size for ITT analysis/for PP analysis.
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