Prediction index of total blood testosterone level in elderly men

The aim of this sudy was to obtain a new tool to predict blood testosterone level in elderly men that is safe, easy, and widely affordable. Testosterone level is the exact tool to diagnose andropause. However this examination is not affordable and not accessible by most of the Indonesian as it is expensive and can only be found in big cities. Therefore, it is essential to acquire an index to predict the decrease in blood testosterone level that also considers risk factors affecting blood testosteronelevel. A Diagnostic test performed in 176 elderly men above 60 years old in Bekasi and Depok. The variables observed were body height, body weight, testosterone level, age, level of education, occupation, monthly spending, multivitamin consumption, lifestyle, exercise. Multivariate analysis shows factors that correlate with the decrease in testosterone level are dietary protein consumption, lifestyle and history of bone fracture. Diagnostic test between the questionnaire of testosterone level and other risk factors with blood testosterone level show 82.2 % sensitivity and 62.8 % specificity. A Prediction index is obtained with cut off at 6. The prediction index was made in the form of manual and software.