Results
Part I:
A total of 168 patients were enrolled, with a male-to-female ratio of 120:48 (male:female=2.5:1), the age of initiation was 0.5~85 years old, the average age was 29.8 years, and the overall age of initiation was bimodal distribution, and the peaks of the two age distributions were about 2~6 years old and 26~30 years old. According to whether the age of first episode was over 18 years old, the above patients were divided into JO-RRP patients and AO-RRP patients.There were 59 patients with JO-RRP, the male to female ratio was 34:25, male accounted for 56.36%, female accounted for 43.64%, and the age proportion was not statistically significant (p=0.34). The age was 7.6±5.0 years, of which a peak occurred at 2~6 years old, and patients in this age group accounted for 33.4% of all JO-RRP patients. There were 109 patients with AO-RRP, the male to female ratio was 86:23, 78.9% were males and 21.1% were females, and the age difference was statistically significant (p<0.01). Age 41±16 years old, peak incidence in 26~30 years old.