The effect of a sports chiropractic manual therapy intervention on the prevention of back pain, hamstring and lower limb injuries in semi-elite Australian Rules footballers: a randomized controlled trial

Table 2 Lower Back Pain (as measured by the MPQ-SF): estimated marginal means for baseline and eighteen weeks by group and estimated change within and between groups

Variable		Baseline		18 weeks		Δ within groups		Δ between groups
		intervention	control	intervention	control	intervention	control	mean	p-value
Current	mean	33.26	32.71	21.44	34.36	-11.81	1.64	-13.46	.026
	95% CI	24.00, 42.52	23.62, 41.81	12.77, 30.12	25.84, 42.88	-22.90, -0.73	-8.8, 12.14	-28.35, 1.44
Overall	mean	26.67	22.86	17.04	27.86	-9.63	5.00	-14.63	.006
	95% CI	20.54, 32.80	16.84, 28.88	10.67, 23.41	21.60, 34.11	-16.35, -2.91	-3.07, 13.07	-24.93, -4.33	(.034)¹
Sensory	mean	12.57	15.26	13.02	18.20	0.45	2.94	-2.49	.461
	95% CI	8.56, 16.59	11.32, 19.20	8.02, 18.03	13.29, 23.11	-3.67, 4.57	-2.54, 8.43	-9.24, 4.25
Affective	mean	4.95	4.76	8.33	10.72	3.38	5.96	-2.58	.411
	95% CI	1.78, 8.12	1.65, 7.87	3.96, 12.70	6.43, 15.01	-0.73, 7.48	1.07, 10.85	-8.84, 3.6
Total	mean	10.53	12.56	11.81	16.19	1.28	3.63	-2.35	.436
	95% CI	7.0, 14.06	9.10, 16.02	7.24, 16.38	11.70, 20.67	-2.57, 5.12	-1.14, 8.40	-8.36, 3.66

* Bold type face indicates significant difference between groups at 18 weeks.
1 Regression analysis showed a significant difference between groups: p-value calculated using regression analysis.

ISSN: 1471-2474