TY - GEN AU - Volinn,E AU - Diehr,P AU - Ciol,M A AU - Loeser,J D TI - Why does geographic variation in health care practices matter? (And seven questions to ask in evaluating studies on geographic variation) SN - 0362-2436 PY - 1995///0125 KW - Geography KW - Humans KW - Low Back Pain KW - epidemiology KW - Lumbar Vertebrae KW - surgery KW - Outcome Assessment, Health Care KW - Practice Patterns, Physicians' KW - Professional Practice Location KW - Small-Area Analysis KW - United States N1 - Publication Type: Journal Article; Research Support, U.S. Gov't, P.H.S UR - https://doi.org/10.1097/00007632-199409151-00012 ER -