Table 5

Associations between persistent pain status at 18 months and lost time disability claim benefit outcomes, overall cohort (n=1131)

Dependent variable 1: total number of LOE days		B	95% CI
Intercept	Intercept	3.191	2.933	3.449
Pain group	Mild pain, functional impairment unlikely versus no pain	0.116	−0.087	0.320
Pain group	Severe pain, functional impairment likely versus no pain	0.511	0.300	0.722

Dependent variable 2: total amount of LOE benefits
Intercept	Intercept	7.925	7.654	8.197
Pain Group	Mild pain, functional impairment unlikely versus no pain	0.134	−0.079	0.348
Pain Group	Severe pain, functional impairment likely versus no pain	0.477	0.254	0.699

Dependent variable 3: total amount of healthcare expenditure benefits
Intercept	Intercept	6.983	6.661	7.304
Pain group	Mild pain, functional impairment unlikely versus no pain	0.479	0.225	0.732
Pain group	Severe pain, functional impairment likely versus no pain	1.259	0.997	1.522

Bold values indicate statistically significant estimate at the α=0.05 level. Analyses adjusted for age, sex, nature of injury and prior chronic conditions. Regression coefficients interpreted as a ‘β% increase’ in the dependent variable per each unit increase in the independent variable. For example in dependent variable 1 (total number of LOE days), the coefficient of mild pain functional impairment unlikely vs no pain (β=0.116) can be interpreted as: those with mild pain had a total number of LOE days 11.6% higher, on average, compared with those with no pain.
LOE, loss of earnings.