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

Table 5 Segmented regression results for intervention sites

	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

ISSN: 1748-5908