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Table 5 Segmented regression results for intervention 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 20.89 13.70 <0.01 17.70 24.08
b 1 
0.50 
1.28 0.22 
1.33 0.32
b 2 1.46 0.98 0.34 
1.67 4.58
b 3 0.93 2.31 0.03 0.09 1.77
b 4 
1.41 
0.81 0.43 
5.05 2.22
b 5 
0.16 
0.39 0.70 
1.00 0.68
Pain score
b 0 34.76 7.62 <0.01 25.21 44.31
b 1 0.11 0.10 0.92 
2.34 2.57
b 2 
14.32 
3.13 0.01 
23.89 
4.75
b 3 
0.54 
0.44 0.66 
3.11 2.03
b 4 3.80 0.73 0.48 
7.16 14.76
b 5 0.81 0.66 0.52 
1.76 3.38
Depression score
b 0 42.93 11.82 <0.01 35.33 50.53
b 1 
1.86 
1.99 0.06 
3.81 0.09
b 2 
4.44 
1.22 0.24 
12.06 3.17
b 3 3.39 3.47 0.00 1.34 5.43
b 4 
1.99 
0.48 0.64 
10.71 6.74
b 5 
1.42 
1.45 0.16 
3.46 0.63
Pressure ulcers
b 0 5.47 3.02 <0.01 1.67 9.26
b 1 0.05 0.11 0.92 
0.92 1.02
b 2 
3.41 
1.88 0.08 
7.21 0.39
b 3 0.28 0.58 0.57 
0.74 1.30
b 4 0.48 0.23 0.82 
3.87 4.83
b 5 
0.60 
1.24 0.23 
1.62 0.42