ED 25. The development of self - rating libido scale for male

Objective: To develop initially a self-rating libido scale for male (SRLS-M) and apply it to clinical practice.

Methods and Results: Firstly we redefinited libido according to CCMD-3, ICD-10 and previous study of parasexuality. Secondly we proposed four aspects as: potential libido, tempting libido, occasional libido, common desire. Structurely designed each item to compose the category according to the definition of libido. In order to abbreviate the items of the scale, the experts gave a mark to each item and deleted the lower. Thirdly, we pretested the 20 items scale and selected the suit items to compose the formal 13 items scale. Finally we analyzed the reliability and validity of the 13 items scale through 276 effective responsive questionnaires and 50 were retested.

Results: (I) Reliability: The re-test reliability after two weeks was 0.931. Alpha of homogeneity reliability was 0.8362. (II) Validity: Between HS and NORM, the rate of diagnosing the HS was 92.85%. between HS and ED, the rate of diagnosing HS was 100% while ED was 87.87%. between HS and PE, the rate of diagnosing HS was 92.85% while PE was 87.09%. (III) Totally 13 items in scale. The results of factor analysis were four factors such as potential libido, tempting libido, occasional libido, common desire.

Conclusions: (I) This 13 items scale is comprehensive and it rates libido from all aspects of the definition of libido. It can quantitate libido. (II) This 13 items scale is good in reliability and validity. It can discriminate HS from other male sexual dysfunctions.