Table 1: The methodological quality of each study.

First author
and date
Study designStudy selectionMethodologyInterventions Baseline Jadad score
Diagnostic criteriaInclusion/exclusion criteriaEffect criteriaRandomizationBlindingAdverse effectsReports of withdrawal and follow-upTreatment groupControl group

Zhang (2001) [5]RCTRefer to criteria of [19]NoneRefer to criteria of [19]Random and concurrent controlNoNoDuration of follow-up: 3 years, no withdrawalMainly used acupunctureMainly used the traditional treatmentAdequate3
Xu (2005) [6]CCTRefer to criteria of [19]NoneRefer to criteria of [19]Only random wordsNoNoDuration of follow-up: 3 years, no withdrawalMainly used acupunctureMainly used the traditional treatmentAdequate2
Lin (2007) [7]CCTRefer to criteria of [18]NoneRefer to criteria of [18]Only random wordsNoNoNoneMainly used acupunctureMainly used the traditional treatmentAdequate2
Liu (2007) [8]RCTRefer to criteria of [19]NoneRefer to criteria of [19]Random and concurrent controlNoNoDuration of follow-up: 3 years, no withdrawalMainly used acupunctureMainly used the traditional treatmentAdequate3
Sun (2007) [9]CCTRefer to criteria of [20]NoneRefer to criteria of [20]Only random wordsNoNoDuration of follow-up: 1 years, no withdrawalMainly used auricular seed-pressing therapyMainly used the traditional treatmentNo report1
Ge (2009) [10]CCTRefer to criteria of [20]NoneRefer to criteria of [20]Only random wordsNoNoDuration of follow-up: 3 years, no withdrawalMainly used acupunctureMainly used the traditional treatmentAdequate2
Li (2009) [11]CCTOnly reports but not date NoneOnly report but not dateOnly random wordsNoNoDuration of follow-up: 18 months, no withdrawalMainly used auricular seed-pressing therapyMainly used the traditional treatmentNo report1
Song (2009) [12]CCTRefer to criteria of [20]Only report the inclusion criteriaRefer to criteria of Ophthalmologist Must-Read [21]Only random wordsNoNoDuration of follow-up: 3 years, no withdrawalMainly used auricular seed-pressing therapyMainly used the traditional treatmentAdequate2
Zheng (2009) [13]CCTRefer to criteria of [20]NoneRefer to criteria of [20]Simple
random
NoNoMention of follow-up, no withdrawalMainly used acupunctureMainly used the traditional treatmentAdequate2
Ge (2010) [14]CCTRefer to criteria of [20]NoneRefer to criteria of [20]Only random wordsNoNoDuration of follow-up: 3 years, no withdrawalMainly used acupunctureMainly used the traditional treatmentNo report1
Wu (2010) [15]RCTRefer to criteria of [20]NoneRefer to criteria of [20]Block randomization and parallel controlNoNoNoneMainly used electrical plum-blossom needleMainly used the traditional treatmentAdequate3
Gong (2011) [16]RCTRefer to criteria of [20]BothRefer to criteria of [20]Table of random numberNoNoDuration of follow-up: 3 years, no withdrawalMainly used auricular seed-pressing therapyMainly used the traditional treatmentAdequate3
Liao (2011) [17]CCTRefer to criteria of [20]NoneRefer to criteria of [20]Only random wordsNoNoCases of withdrawal, no follow-upMainly used TCM heat-sensitive moxibustion Mainly used the traditional treatmentAdequate3
Wu (2011) [18]RCTRefer to criteria of [20]BothRefer to criteria of [20]Block randomization and parallel controlNoNoCriteria of withdrawal, no follow-upMainly used electrical plum-blossom needleMainly used the traditional treatmentAdequate4