Nomogram for stratifying patients with lifelong premature ejaculation before using the PHQ-9: An observational study

A PHQ-9 score ≥ 15, represented as PHQ-9The nomogram was constructed by analysing data of 802 patients from Xijing Hospital and Northwest Women'sChildren's Hospital. The LASSO and multivariable logistic regressions were used to identify independent predictors of PHQ-9The duration of PE, IELT, a history of PE exacerbation, IIEF-5 score, urinary frequency and physical pain score were identified as independent predictors. The nomogram showed excellent calibration, discrimination and clinical usefulness in the derivation and validation cohorts, with a predictive accuracy of 0.781 and 0.763, respectively. Based on this nomogram, patients were divided into not recommended, recommended and strongly recommended PHQ-9 filling groups, with PHQ-9A nomogram to discern LPE patients with low risks of PHQ-9