Table 4. Relationship between percentage of clinical decisions based on IVD testing and perceived HCE on IVDs by physicians.

Clinical decisions based on IVD	Perceived HCE on IVD
	0–4%	5–10%	11–20%	>20%
<20%	34.7%***	40.8%***	16.3%**	8.2%*
20–44%	19.7%**	44.3%***	19.7%**	16.4%**
45–64%	7.7%*	36.5%***	40.4%***	15.4%**
65–85%	8.3%*	41.7%***	33.3%***	16.7%**
>85%	13.3%*	20.0%**	40.0%***	26.7%**

*0–14.9%

**15–29.9%

***30–44.9%

HCE, healthcare expenditure; IVD, in vitro diagnostic.