The potential risk of using historic claims to set bundled payment prices: the case of physical therapy after lower extremity joint replacement

Table 4 Multilevel linear model predicting PT use after THA surgery (2015–2018)

	Model A		Model B
	β	SE	β	SE
Enabling factors
Supplementary insurance (yes)			5.72**	0.515
Contract type PT
- Uncontracted (ref)			0
- Standard			0.99	0.631
- Basic			1.87**	0.448
- Plus			2.21**	0.457
Number of non-TJA-related PT sessions between 6 to 12 months prior to surgery			0.15**	0.011
THA procedure volume			−0.002*	0.0005
Need factors
Number of TJA-related PT sessions in 6 months prior to surgery	0.19**	0.010	0.18**	0.010
Diabetes: Insulin	1.07*	0.449
COPD	0.60*	0.224	0.57*	0.223
Constant	14.74**	0.298	8.49**	0.786
-2 log likelihood	105,380.8		104,889.2

Abbreviations: SE standard error, PT physical therapy, THA total hip arthroplasty, TJA total joint arthroplasty, COPD chronic obstructive pulmonary disease
*p < 0.05, **p < 0.001

ISSN: 1472-6963