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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