Do MRI findings identify patients with chronic low back pain and Modic changes who respond best to rest or exercise: a subgroup analysis of a randomised controlled trial

Table 3 Results of linear regression models for change score in pain at 14-month follow-up

	Beta coefficient	p-value	95 % confidence interval
Modic changes Type 1
Treatment^a	0.82	0.42	−1.19;2.82
Modic changes Type 1	−1.79	0.03	−3.41; −0.17
Interaction: Modic Type 1 & treatment	−0.99	0.39	−3.28;1.29
Constant	2.09	0.004	0.67;3.51
Large Modic changes (any type)
Large Modic changes	1.23	0.13	−0.37;2.84
Treatment	1.08	0.26	−0.80;2.95
Interaction: large Modic changes & treatment	−1.49	0.19	−3.73;0.75
Constant	−0.14	0.83	−1.49;1.20
Large Modic changes Type 1
Large Modic changes Type 1	0.07	0.93	−1.42;1.55
Treatment	0.89	0.27	−0.70;2.47
Interaction: large Modic changes Type 1 & treatment	−1.49	0.16	−3.57;0.58
Constant	0.68	0.24	−0.46;1.83
Severe disc degeneration
Severe disc degeneration	−0.002	0.998	−1.53;1.52
Treatment	−0.24	0.78	−1.55;1.07
Interaction: severe disc degeneration & treatment	0.74	0.50	−1.40;2.88
Constant	0.72	0.13	−0.22;1.67
Large disc herniation
Large disc herniation	0.73	0.34	−0.78;2.24
Treatment	0.38	0.56	−0.90;1.66
Interaction: large disc herniation & treatment	−0.92	0.42	−3.15;1.31
Constant	0.43	0.38	−0.53;1.39

ISSN: 2045-709X