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Table 6 Segmented regression results for comparison sites

From: Data for improvement and clinical excellence: report of an interrupted time series trial of feedback in long-term care

 

Coefficient estimate

t-statistic

p-value

Lower limit 95% confidence interval

Upper limit 95% confidence interval

Falls


b 0

23.04

5.53

<0.01

14.31

31.76


b 1


0.49


0.45

0.65


2.73

1.75


b 2

2.71

0.65

0.52


6.03

11.45


b 3

0.43

0.38

0.71


1.92

2.77


b 4

8.20

1.71

0.10


1.81

18.21


b 5


1.90


1.70

0.11


4.25

0.44

Pain score


b 0

45.86

9.78

<0.01

36.05

55.68


b 1


0.10


0.08

0.93


2.62

2.42


b 2


2.49


0.53

0.60


12.32

7.35


b 3


1.53


1.21

0.24


4.17

1.11


b 4

6.45

1.20

0.25


4.82

17.71


b 5

0.22

0.17

0.87


2.42

2.86

Depression score


b 0

27.88

5.59

<0.01

17.44

38.31


b 1

2.47

1.93

0.07


0.21

5.15


b 2

3.04

0.61

0.55


7.42

13.49


b 3


2.35


1.76

0.10


5.16

0.45


b 4

5.68

0.99

0.33


6.30

17.66


b 5


1.21


0.91

0.38


4.02

1.59

Pressure ulcers


b 0

3.53

1.91

0.07


0.35

7.41


b 1

0.14

0.30

0.77


0.86

1.14


b 2

1.50

0.81

0.43


2.38

5.39


b 3


0.21


0.41

0.68


1.25

0.84


b 4


1.41


0.67

0.51


5.87

3.04


b 5

0.02

0.04

0.97


1.02

1.07