Table 3.

Multivariable logistic regression analysis estimating the association between claimant characteristics and organizational factors on severe injury (31+ days of disability) from 3337 worker compensation claims in Alberta between September 1, 2014 and September 30, 2018

Variable	Unadjusted			Adjusted
	Odds ratio	95% Confidence interval	P-value	Odds ratio	95% Confidence interval	P-value
Most recent wave of data collection (reference: wave 3 = previous wave)	1.14	0.83–1.57	0.4300	1.15	0.82–1.60	0.4254
Bed size (reference = small < 80 beds)
Large (> 120 beds)	0.74	0.30–1.79	0.5003	0.61	0.23–1.64	0.3287
Medium	0.65	0.24–1.75	0.3901	0.75	0.27–2.11	0.5816
Total care aide workforce (reference = 31–79)
121 and above	1.12	0.77–1.64	0.5581	1.20	0.77–1.87	0.4310
80–120	1.33	0.92–1.94	0.1311	1.28	0.82–1.98	0.2753
Owner-operator (reference = public not for profit)
Private for profit	0.86	0.55–1.34	0.5089	0.54	0.28–1.07	0.0779
Voluntary not for profit	1.39	0.97–1.98	0.0727	0.95	0.55–1.66	0.8668
Organizational context (reference = Q1, lowest context score quartile)
Q2-low context	0.79	0.51–1.24	0.3090	0.70	0.42–1.15	0.1570
Q3-high context	0.57	0.32–1.01	0.0541	0.54	0.29–0.99	0.0480
Q4-highest context	0.74	0.49–1.11	0.1405	0.69	0.41–1.17	0.1688
Claimant age (reference = 18–29)
30–39	1.73	0.76–3.94	0.1897	1.67	0.74–3.75	0.2167
40–49	1.94	0.89–4.25	0.0957	1.94	0.90–4.19	0.0930
50–59	2.27	1.05–4.90	0.0377	2.26	1.06–4.83	0.0359
60+	2.76	1.22–6.27	0.0153	2.70	1.20–6.08	0.0165
Claimant sex (reference = male)
Female	1.03	0.60–1.76	0.9197	1.02	0.60–1.74	0.9397
% of resident with moderate-severe cognitive impairment (CPS 3+)a	0.62	0.10–3.71	0.5982	0.45	0.03–6.95	0.5662
% residents with highest level of ADL impairment (ADL-H 5+)b	0.39	0.14–1.10	0.0758	0.20	0.04–0.94	0.0419

^aCognitive Performance Scale

^bActivities of Daily Living-Hierarchy Scale