title: An Introduction to the Linear Mixed Model for Orthopaedic Research.
authors.affiliation: Biomedical Research Institute (S.-S.K.), Department of Orthopaedic Surgery (K.M.L., C.Y.C., and M.S.P.), Seoul National University Bundang Hospital, 300 Gumi-Dong, Bundang-Gu, Sungnam, Kyungki, 463-707 South Korea.
authors.forename: Soon-Sun
authors.initials: SS
authors.lastname: Kwon
authors.affiliation: Biomedical Research Institute (S.-S.K.), Department of Orthopaedic Surgery (K.M.L., C.Y.C., and M.S.P.), Seoul National University Bundang Hospital, 300 Gumi-Dong, Bundang-Gu, Sungnam, Kyungki, 463-707 South Korea.
authors.forename: Kyoung Min
authors.initials: KM
authors.lastname: Lee
authors.affiliation: Biomedical Research Institute (S.-S.K.), Department of Orthopaedic Surgery (K.M.L., C.Y.C., and M.S.P.), Seoul National University Bundang Hospital, 300 Gumi-Dong, Bundang-Gu, Sungnam, Kyungki, 463-707 South Korea.
authors.forename: Chin Youb
authors.initials: CY
authors.lastname: Chung
authors.affiliation: Department of Orthopaedic Surgery, Myongji Hospital, 55 Hwasu-Ro 14 beon-gil, Deokyang-Gu, Goyang, Kyungki, 412-826 South Korea.
authors.forename: Seung Yeol
authors.initials: SY
authors.lastname: Lee
authors.affiliation: Biomedical Research Institute (S.-S.K.), Department of Orthopaedic Surgery (K.M.L., C.Y.C., and M.S.P.), Seoul National University Bundang Hospital, 300 Gumi-Dong, Bundang-Gu, Sungnam, Kyungki, 463-707 South Korea.
authors.forename: Moon Seok
authors.initials: MS
authors.lastname: Park