Table 9.

Risk of bias for nasal airflow devices category using the Joanna Briggs Institute critical appraisal checklist for diagnostic test accuracy studies.

Study, year	Risk of bias
	Patient selection				Index test
	Q1	Q2	Q3	Q4		Q5	Q6	Q7	Q8	Q9	Q10
Shochat et al [20], 2002	a		b						N/Ac		d
Wong et al [55], 2008									N/A
Ozmen et al [54], 2011									N/A
Dinç et al [53], 2014									N/A
Jin and Sánchez-Sinencio [27], 2015									N/A

^aIndicates low risk of bias.

^bIndicates unclear risk of bias.

^cN/A: not applicable.

^dIndicates high risk of bias.