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Table 3 Influenza vaccination rates and missed vaccination opportunities during the Year 1 randomized controlled cluster trial by practice, intervention group and city

From: Using the 4 pillars™ practice transformation program to increase adult influenza vaccination and reduce missed opportunities in a randomized cluster trial

Site

Total N

% Vaccinated

% of Patients with ≥1 Missed Opportunities

Baseline

Year 1

PP Difference

Baseline

Year 1

PP Difference

8/1/2012-1/31/2013

8/1/2013-1/31/2014

8/1/2012-1/31/2013

8/1/2013-1/31/2014

Pittsburgh sites

 Intervention

  B

529

49.0

50.5

1.5

79.0

76.0

-3.0

  C

2179

57.9

65.0

7.1

65.9

62.6

-3.3

  D

3224

54.6

59.3

4.7

66.1

64.1

-2.0

  E

1392

47.4

54.2

6.8

78.0

71.2

-6.8

  G

417

51.8

54.0

2.2

70.5

69.5

-1.0

  H

306

53.3

48.0

-5.3

77.8

69.9

-7.9

  F

3611

56.0

60.6

4.6

66.7

67.0

0.3

  J

603

49.1

54.7

5.6

70.7

65.7

-5.0

  K

330

23.6

30.9

7.3

91.5

89.4

-2.1

  M

595

62.0

68.1

6.1

66.9

62.2

-4.7

Total

13,186

53.7

58.7

5.0*

69.3

66.8

-2.5*

 Control

  N

2102

60.2

61.8

1.6

71.2

67.4

-3.8

  O

4324

35.3

50.9

15.6

76.5

68.9

-7.6

  R

2534

42.3

46.7

4.4

76.1

70.5

-5.6

  S

1045

35.3

36.0

0.7

83.8

81.3

-2.5

  U

2612

52.9

54.2

1.3

68.2

71.2

3.0

  W

224

61.2

75.0

13.8

66.1

53.6

-12.5

  X

1010

47.2

56.6

9.4

72.5

70.1

-2.4

  Y

3334

54.3

58.2

3.9

70.6

68.2

-2.4

Total

17,185

46.8

53.3

6.5*

73.4

69.8

-3.6*

Houston sites

 Intervention

  A

4880

43.4

47.9

4.5

79.3

78.3

-1.0

  I

8527

33.2

37.4

4.2

82.7

85.0

2.3

  L

5867

36.1

35.2

-0.9

82.0

86.2

4.2

Total

19,274

36.7

39.4

2.7*

81.6

83.7

2.1*

 Control

  P

6388

36.6

46.9

10.3

82.5

79.8

-2.7

  T

5547

32.2

40.7

8.5

82.6

79.5

-3.1

  V

8969

47.0

46.4

-0.6

73.8

76.1

2.3

Total

20,904

39.9

45.1

5.2*

78.8

78.1

-0.7*

  1. Note: PP percentage point difference between baseline and Year 1 vaccination rates and percent of patients with ≥1 missed opportunities. A decrease in missed opportunities is the desired outcome
  2. *P value is a two-sided probability from Cochran-Armitage trend test for percentage point difference between Baseline and Year 1 (P < 0.001)
  3. P value is a two-sided probability from chi-square test for percentage point difference between intervention and control groups (P < 0.001)