Characteristics of the study subjects and comparison of conventional and non-genetic risk factors of lumbar spine pathologies between controls and all cases or subgroups.

Characteristics of the study subjects and comparison of conventional and non-genetic risk factors of lumbar spine pathologies between controls and all cases or subgroups.研究对象的特征，以及对照组与全部病例组或各亚组之间腰椎疾病的常规与非遗传危险因素对比分析。