Brief psychosocial education, not core stabilization, reduced incidence of low back pain: results from the Prevention of Low Back Pain in the Military (POLM) cluster randomized trial

Table 3 LBP rate by company based on utilization data

Training Group	Company	N	Number (%) of Soldiers with LBP incidence resulting in seeking of health care
TEP	1	191	30 (15.7%)
	2	252	41 (16.3%)
	3	228	37 (16.2%)
	4	297	59 (19.9%)
	5	248	46 (18.5%)
	All	1216	213 (17.5%)
TEP + PSEP	1	272	36 (13.2%)
	2	85	12 (14.1%)
	3	229	39 (17.0%)
	4	103	15 (14.6%)
	5	263	30 (11.4%)
	All	952	132 (13.9%)
CSEP	1	250	44 (17.6%)
	2	271	33 (12.2%)
	3	239	50 (20.9%)
	4	269	55 (20.4%)
	5	67	11 (16.4%)
	All	1096	193 (17.6%)
CSEP + PSEP	1	217	37 (17.1%)
	2	183	26 (14.2%)
	3	193	29 (15.0%)
	4	201	35 (17.4%)
	5	267	41 (15.4%)
	All	1061	168 (15.8%)
CSEP	Yes	2157	361(16.7%)
	No	2168	345 (15.9%)
PSEP	Yes	2013	300 (14.9%)
	No	2312	406 (17.6%)

Data presented in the table are unadjusted. Total intervention groups are in bold. The intracluster correlation coefficient (ICC) is 0.0053. For the test of equal LBP rate across intervention groups, comparing TEP Yes vs No, and comparing PSEP Yes vs No, the Chi-Square values equal to 6.99, 0.54, and 5.56; with corresponding P-values of 0.0722, 0.4641 and 0.0183, respectively. Adjusting for ICC, the Chi-square values reduce to 6.35, 0.49, and 5.05; with corresponding P-values of 0.0957, 0.482 and 0.0246, respectively

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