It would be interesting to know.
Are there any average temporal characteristics for defending a PhD thesis?
According to the research of the Nizhny Novgorod University (Russia), these intervals are as follows:
3-5 years for the socio-humanities sciences,
3-6 years for natural sciences.
The dataset included 313 defended Ph.D. students.
Are there any requirements for publications as 1-3 articles in WebofScience or SCOPUS databases before dissertation defend?
Are there any scientific papers on this issue?
P.S. Sorry for poor English and thanks Google Translator.