The Orgasmometer-m: validation in Mandarin and measurement of orgasmic intensity in the Han population affected by premature ejaculation

This cross-sectional study aimed to validate the male version of the Orgasmometer in Mandarin and to examine whether Chinese men with premature ejaculation (PE) experience reduced orgasmic intensity. From September 2020 to January 2023, a group of 230 men with PE (mean age=28.2 ± 4.8) and 107 men without sexual dysfunction (mean age= 35.1 ± 6.7), who were seeking help from the Department of Infertility and Sexual Medicine, underwent a detailed assessment from the andrologist and completed a questionnaire that included the Mandarin Orgasmometer (Orgasmometer-m), the Premature Ejaculation Diagnostic Tool (PEDT), and the erectile function domain of the International Index of Erectile Function (IIEF-6). Orgasmometer-m scores were 5.0 (4.0) in the PE group and 8.0 (3.0) in the non-PE group; PEDT scores were 14.8 ± 2.5 and 3.3 ± 2.4, and IIEF-6 scores were 27.9 ± 1.6 and 29.1 ± 1.2, respectively (p < 0.001). The Orgasmometer demonstrated good discriminative validity, with an area under the curve (AUC) of 0.8296 (95% CI: 0.7873-0.8719, p < 0.0001). A score of ≤6 was identified as the optimal cutoff for distinguishing low from high orgasm intensity, yielding 66.1% sensitivity and 86.9% specificity. These findings support the reliability of the Orgasmometer-m and suggest that men with PE report diminished orgasmic experiences.