Characteristics and productivity of the chiropractic workforce of the Veterans Health Administration

Table 3 Regression models of chiropractors’ productivity measures

Variable	Univariable				Mutivariable
		95% CI				95% CI
	Coefficient	LCI	UCI	P	Coefficient	LCI	UCI	P
Age group (ref: < 40)				< 0.001				0.1
40–49	262.43	−201.60	726.45	0.27	37.12	−427.65	501.89	0.87
50–59	546.73	45.18	1048.27	0.03	324.49	−199.34	848.32	0.22
60 +	1107.33	562.87	1651.79	< 0.001	657.29	86.09	1228.49	0.02
Sex
Male vs. Female	248.41	−205.94	702.77	0.28	57.75	−383.47	498.98	0.80
Years served in VHA
	52.05	14.64	89.45	0.01	13.85	−26.36	54.06	0.50
Number of unique patients
	1.90	1.17	2.62	< 0.001	0.59	−0.71	1.89	0.37
Patient visits
	0.50	0.32	0.68	< 0.001	0.29	−0.03	0.61	0.07
Number of DCs per facility (ref: DC = 1)				0.11				0.13
2	531.42	9.06	1053.79	0.05	60.85	−457.96	579.66	0.82
3	654.38	33.61	1275.15	0.04	608.73	28.98	1188.48	0.04
3+	240.62	−332.30	813.55	0.41	49.33	−537.24	635.90	0.87
Administrative support staff FTE per DC FTE
	184.68	−374.47	743.82	0.52
Clinical support staff FTE per DC FTE
	391.42	−380.26	1163.10	0.32
MCG (ref = 1a-High Complexity)				0.18				0.4
MCG1b-High Complexity	−390.61	−927.17	145.96	0.15	−351.14	−872.80	170.52	0.19
MCG1c-High Complexity	−254.05	−779.45	271.35	0.34	−152.69	−709.36	403.99	0.59
MCG2-Medium Complexity	−427.83	−1058.51	202.85	0.18	−168.56	−794.08	456.95	0.60
MCG3-Low Complexity	−706.02	−1303.43	−108.60	0.02	−580.36	−1221.04	60.32	0.08

CI confidence interval, LCI lower confidence interval, UCI upper confidence interval, VHA Veterans Health Administration, DC doctor of chiropractic, FTE full-time equivalent, MCG medical complexity grouping

ISSN: 2045-709X