Fig. 5
From: Past and present: a bibliometric study on polycystic ovary syndrome
Hot spots and evolution of PCOS research. a Keyword word frequency. X-axis represents keyword frequency, whereas the Y-axis represents keyword. b Keyword plus co-occurrence network. A larger circle represents a higher frequency of keyword occurrence. A thicker line represents a higher correlation between the two keywords. c Keyword evolution analysis. The core keywords from 2011 to 2017 are on the left, whereas those from 2018 to 2021 are on the right