The influence of social support on healthcare service use following transport-related musculoskeletal injury

Table 2 Direct effect: Zero inflated negative binomial regressions for family and friends’ support on allied healthcare service use

	Allied healthcare service use
	Logistic		Negative binomial
Models	OR	95 % CI	IRR	95 % CI
1. Family^a
Definitely	2.17*	1.21–3.91	0.82	0.63–1.06
Yes, sometimes	1.67	0.89–3.14	0.98	0.74–1.30
No, not at all	2.66*	1.34–5.27	0.73	0.53–1.01
Not often (ref)
2. Friends^a
Definitely	1.87*	1.09–3.21	0.65*	0.52–0.83
Yes, sometimes	1.55	0.88–2.72	0.79	0.62–1.01
No, not at all	2.31*	1.20–4.42	0.75	0.55–1.02
Not often (ref)

OR odds ratio; IRR incidence rate ratio; CI confidence intervals; REF reference
In the logistic model, an OR value greater than 1 indicates increasing odds of being a more frequent non-user of healthcare services, whereas an OR value less than 1 indicates increasing odds of being a more frequent users of healthcare services. In the negative binomial model, an IRR value greater than 1 indicates increase healthcare service use rate, whereas an IRR less than 1 indicates decrease healthcare service use rate
^aModels adjusted for family composition, gender, age, education, country of birth, SEIFA, injury types, pre-injury health status, hospitalisation, days post-injury, and PCS score
*p < 0.05

ISSN: 1472-6963