Table 1 Key features of 43 studies on accuracy of diagnosic tests.

First author	Type of test	Prevalence, %	Sample size (n)	Screening	Calculation of sample size
Budenz DL	Imaging	37	172	No	No
Burkat CN	Clinical examination	32	202	No	No
Leung CK	Imaging	65	133	No	No
Morgan JE	Imaging	49	106	No	No
PHPRG	Test of visual function	53	122	No	Yes
Kook MS	Imaging	49	136	No	No
Ben Simon GJ	Imaging	27/23	131	No	No
Harasymowycz PJ	Imaging	7,2	303	Yes	/
Jeoung JW	Imaging	100	55	No	No
Brusini P	Functional test	32	123	No	No
Sandhu SS	Imaging	64	131	No	No
Galvao Filho RP	Imaging	63	108	No	No
Spry PGD	Functional test	31	48	No	No
Koc F	Clinical examination	36	85	No	No
Grus FH	Laboratory test	55	159	No	No
Leung CK	Imaging	27/36	111	No	No
Bourne RRA	Imaging	27/38	104	No	No
Bowd C	Imaging	56	164	No	No
Patterson AJ	Imaging	60	50	No	No
Lin PY	Clinical Examination	34	1361	No	No
Ishikawa H	Imaging	51	47	No	No
Essock EA	Imaging	50	134	No	No
VPSG	Functional test	32	1452	Yes	/
Leung CK	Imaging	70	89	No	No
Bengtsson B	Functional test	42	463	No	No
Burgansky Z	Imaging	53	89	No	No
Huang M	Imaging	47	189	No	No
Moreno J	Imaging	77	86	No	No
Gelman R	Imaging	38	32	No	No
Martinez JM	Clinical examination	100	147	No	No
Smith TS	Imaging	100	20	No	No
van Overdam KA	History	2,7	270	No	No
Graham SL	Functional test	51	436	No	No
Radhakrishnan S	Imaging	52	31	No	No
Pirbhai A	Imaging	52	223	No	No
Ferraro JG	Imaging	69	72	No	No
Wollstein G	Imaging	50	74	No	No
Medeiros FA	Imaging	53	166	No	No
Migliori S	Imaging	20	518	No	No
Cavallerano JD	Imaging	36	102	No	No
Davis JL	Laboratory test	14/34	78	No	No
Medeiros FA	Imaging	52	136	No	No
Huynh SC	Functional test	4,5	1765	Yes	/

PHPRG, Preferential Hyperacuity Perimetry Research Group; VPSG, The Vision in Preschoolers Study Group.