Influencing factors of clinical efficacy of autologous platelet-rich plasma in the treatment of androgenetic alopecia

Objective To analyze the influencing factors of clinical efficacy of autologous platelet-rich plasma in the treatment of androgenetic alopecia. Methods From January, 2019 to December, 2021, 151 outpatients with androgenetic alopecia were treated in our hospital. All patients were treated with autologous PRP injection once a month and planned to received injection for 4-6 occasions. According to the hair growth before and after treatment, the treatment results were evaluated. The influencing factors in the treatment results were grouped and analyzed, including the treatment numbers (divided into 1-6 occasions), the grade of alopecia(three grades: mild, moderate and severe alopecia) and the Plt concentration in PRP[five grades(×109/L): extremely low concentration (1 501)]. Results The correlation coefficient between the number of treatments and the effective rate was pearson=0.986, P1, the effective rate increased by 2.619 times and 2.033 times, respectively, as treatment numbers and Plt concentration increased. When the OR value of the grade of alopecia was 0.338 (0