Systematic review
We carried out a systematic review and meta-analysis in order to
understand how our findings relate to the broader context of studies
previously published in China. We searched the China National Knowledge
Internet (CNKI), Wanfang (Chinese), Web of Science and Pubmed databases
without restriction for publication date and languages on January
13th, 2021. The following terms were used to achieve
specific searches: ‘pediatric gynecology’, ‘adolescent gynecology’,
‘pediatric and adolescent gynecology’, ‘girls’, ‘China’ and ‘Chinese’.
We retrieved additional studies by surveying references of other reports
and by using the MEDLINE option ‘Related Articles.’
The initial search strategy yielded 1235 articles, of which 1198 were
excluded after a review of the title and abstract. The articles involved
with the disease spectrum analysis of children and teenagers’
gynecological outpatient records were included; those of full text
cannot be found, having no disease spectrum data, duplicate publication
or identical data, pathological analysis, and case report were excluded.
None of the articles found through Pubmed and Web of Science databases
met the inclusion criteria. Thirty-seven articles from CNKI and Wanfang
met the necessary requirements for the study and were fully read. Of
these, four articles were excluded because of overlapping data or weak
study designs. Two investigators conducted the search and identified
eligible studies independently. In total, 33 studies (20 outpatient and
13 inpatient studies) were included in our systematic review (Table S1).
Notably, all of the included studies were originally published in
Chinese journals.