The purpose of this study is to estimate the reliability of the French version of the M.F.A.Q. method, a tool used to measure the physical health of the elderly. During the survey, four interviewers assessed 15 subjects each by using the M.F.A.Q. Following this, all 60 participants were evaluated two months later, this time without the subjects being present. In addition, a geriatric specialist also assessed the 60 questionnaires a posteriori. The results show an intra-rater reliability (a 96% performance rate within a 1-point difference on a scale of 6) and an inter-rater reliability (Kappas, on a scale from good to moderate; alpha of Cronbach = 0.93) which were acceptable. An analysis of the covariance reveals that age does not figure in the judgments. The authors express certain reservations, but conclude that this instrument of measurement is flexible, easy to administer, in addition to its metrological properties being satisfactory.