Ryan P Bialaszewski, John M Gaddis, Blake Martin, Philippe Dentino, John Ronnau
Bridging Bone Health: Osteoporosis Disparities in the Rio Grande Valley
Cureus
common problem metaanalyses unavailability mean standard deviation sd unfortunately values median interquartile range iqr range cannot directly utilized metaanalysis although estimation conversion methods proposed past two decades published userfriendly tools developed based multiple scenarios missing sd therefore study aimed provide collection possible circumstances missing sample means sd solutions teaching research total 10 common circumstances missing sd mean could available statistics p value value z score confidence interval standard error median iqr range teachers investigators use relevant formulas finding sample mean sd according available circumstance due complicated computations team provides free available spreadsheet everevolving statistical methods formulas may improved future therefore recommended involve statisticians evidencebased practice systematic reviews