Table 3.

Frequency of general HRQoL measures in device studies

General HRQoL measures	Frequency in relation to the number of studies included PROM (%)	Frequency in relation to the total number of device studies (%)
EQ-5D	29.7	6.2
VAS	19.7	4.1
SF-36	6.6	1.4
SF-12	2.6	0.5
PSI	1.0	0.2
NRS	0.3	0.1
Total	59.9	12.5

General HRQoL measures are still relatively rarely used (12.5%) in device studies. In studies that included PROMs general HRQoL measures were applied in 59.9%. Out of the six identified measures, EQ-5D is the dominant followed by VAS, while the frequency of other measures is far behind these two