Table 1. Features of diagnose and evaluating methods for premature ejaculation.

Method	Introducer(s)	Year	Advantages	Limitations	Quantitative	Objective
History enquiry/physical examination	Althof et al. (7)	2014	Direct first impression	Sometimes lacks of initiative; lack systematicness and unity	No	No
Patients-reported Outcome (PRO)-questionnaires	Althof et al. (8)	2006	Systematically symptom review; multidimensional coverage; easy to administer	Invalidated in new diagnostic criteria; lack unity in survey and scoring system	Yes	No
	Symonds et al. (9)	2007
	Patrick et al. (10)	2009
	Others	/
IELT evaluations	Waldinger et al. (11)	1994	First quantitative impression; easy to review; calculated or estimated	One dimensional appraising; real life inconvenient	Yes	NA
Penile biothesiometry	Newman et al. (12)	1970	Vibratory sensitivity evaluation; objective parameters	Lack standard operative protocol nor appraising parameters; complicated procedures	Yes	Yes
Penile electrophysiological test	Vignoli et al. (13)	1978	Direct evidence of neuronal conductive characteristics	Lack standard operative protocol nor appraising parameters; complicated procedures	Yes	Yes

NA, not available.