Table 1.

Study Characteristics of Included Studies

Study Characteristics	Zalaudek, 2006 [14]	Huerta-Brogeras, 2012 [15]
Dermatoscope	Heine Delta 20 hand-held dermatoscope or a Dermlite FOTO lens attached to a Nikon Coolpix 4500 digital camera	Dermlite FOTO lens attached to Canon 400D camera
Included lesions	Nonpigmented AK	Nonpigmented and pigmented AK
Number of patients	32	178
Number of AK	41	178
Age (mean)	69 years	67 years
Clinical examination (naked eye vs. photography?	Photograph	Naked-eye
Dermoscopic examination (real time vs. photography)	Photograph	Photograph
HP study of all lesions	Yes	Yes

AK = actinic keratosis; HP = histopathological study