We also included two existing measures of sexual function.> As outlined above, there are no universally agreed standard instruments for measuring sexual function in the community.
Four kinds of questionnaires were used for measuring sexual function or sexual desire, including the IIEF-5 [ 21], Green Climacteric Scale (GCS) [ 22], subjective Likert scale [ 23], and Sexual Desire Inventory [ 24].
19 20 We measured sexual functioning with the Pelvic Organ Prolapse/Incontinence Sexual Function Questionnaire-12 (range 0-48, withigherer scores indicating better sexual functioning).
Other studies have measured sexual functioning and quality of life as independent outcome variables, but have not examined the relationship between the two [ 72- 75].
Furthermore, patients are asked to complete questionnaires to measure sexual functioning: the Female Sexual Function Index (FSFI), Female Sexual Distress Scale (FSDS) and a questionnaire to measure (indirect) costs.
Out of the 2,192 citations initially identified, 129 studies met the inclusion criteria, using 30 different scales, 18 of which were specifically designed to measure sexual functioning, and 12 were subscales within QOL questionnaires.
The SAQ (Thirlaway et al, 1996) was developed for another study (Fallowfield et al, 2001) and is designed to measure sexual functioning in terms of activity, pleasure and discomfort.
The Female Sexual Functional Index (FSFI) [ 32] is a multidimensional self-report instrument with 19 items, with responses assessed using a 6-point Likert-scale, which aims to measure sexual functioning on the dimensions of sexual desire, arousal, lubrication, orgasm, satisfaction and pain.
Our objectives were to measure sexual function in the morbidly obese man before and after substantial weight loss induced by gastric bypass surgery.
