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. 2013 Mar 9;7(1):2–21. doi: 10.1016/j.optom.2013.01.004

Table 6.

Quality rating of the 3 included studies related to clinical signs (QUADAS −2 results).

Study	Risk of bias				Applicability concerns
	Patient selection	Index test	Reference standard	Flow and timing	Patient selection	Index test	Reference standard
2006, Sterner B³⁸
2002, García A⁴¹		?
2002, Cacho P²⁹		?	?

( Inline graphic ) low risk; () high risk; (?) unclear risk.