Table 2.

Pain intensity differences of all groups^*

Variable		Group 1 (n=24)			Group 2 (n=24)			Group 3 (n=22)			Group 4 (n=20)				Comparison of groups (P-value)
		Mean	25%	75%	Mean	25%	75%	Mean	25%	75%	Mean	25%	75%	1–2	1–3	1–4	2–3	2–4	3–4
Pain at activity (BT)		5.5	4	7	6	4	7	5	4	7.25	5	3.25	6.75	0.410	0.600	0.793	0.929	0.398	0.451
Pain at activity (4 wk)		1.5	0	3	0	0	3.75	2.5	0.75	4.25	0	0	3	0.536	0.153	0.363	0.064	0.801	0.037
Pain at activity (8 wk)		0	0	1	0	0	0	0	0	2	0	0	0	0.227	0.533	0.149	0.081	0.698	0.056
P-value
	BT–4 wk		<0.001			<0.001			<0.001			<0.001
	AT–8 wk		<0.001			<0.001			<0.001			<0.001
	4–8 wk		0.001			0.007			0.001			0.011
Pain at night (BT)		0.5	0	4.75	4	0	5.75	3.5	0	5	1	0	5	0.196	0.504	0.920	0.521	0.294	0.654
Pain at night (4 wk)		0	0	0	0	0	0	0	0	1.5	0	0	0	1.000	0.146	0.700	0.146	0.700	0.359
Pain at night (8 wk)		0	0	0	0	0	0	0	0	0	0	0	0	0.317	0.280	0.400	0.064	1.000	0.118
P-value
	BT–4 wk		0.001			<0.001			0.001			0.005
	AT–8 wk		0.002			<0.001			0.001			0.01
	4–8 wk		0.002			0.068			0.015			0.066
Pain at rest (BT)		1.5	0	6	4	1	6	3	2	5	4	2	5	0.271	0.409	0.267	0.430	0.651	0.683
Pain at rest (4 wk)		0	0	0.75	0	0	0	1	0	2	0	0	0	0.039	0.130	0.324	<0.001	0.228	0.008
Pain at rest (8 wk)		0	0	0	0	0	0	0	0	0	0	0	0	0.153	0.555	0.228	0.064	1.000	0.118
P-value
	BT–4 wk		0.001			<0.001			<0.001			<0.001
	AT–8 wk		0.001			<0.001			<0.001			0.001
	4–8 wk		0.042			0.317			0.003			0.18

P<0.05 values are presented in bold.

BT, before treatment; AT, after treatment.

^*By two-way analysis of variance test.