Result(s):Three thousand ninety-six (94%) of the twins and 145 (82%) of the physicians responded to the survey. Two hundred fifteen twins reported endometriosis, for a prevalence rate of .07 among question respondents. Tetrachoric twin pair correlations for self-reported endometriosis (MZ: n ϭ 854 and DZ: n ϭ 493) were r MZ ϭ .46 Ϯ .09 and r DZ ϭ .28 Ϯ .13. When available medical and pathology reports were included, they changed to r MZ ϭ .52 Ϯ .08 and r DZ ϭ .19 Ϯ .16, suggesting that 51% of the variance of the latent liability to endometriosis may be attributable to additive genetic influences. Conclusion(s):These findings support the hypothesis that genes influence liability to endometriosis. (Fertil Steril 1999;71:701-10.

An SLE can replace clinical time in cardiorespiratory physiotherapy practice. Part education in the SLE satisfied clinical competency requirements, and all stakeholders were satisfied.