title: A comparison of telephone interview versus on-site completion of Lysholm knee score in patients who underwent arthroscopic ACL reconstruction: are the results equivalent?
abstract: BACKGROUND
  The purpose of this study was to compare two different modes of administration (telephone versus face to face) for Lysholm knee score (LKS) to test their multi-mode equivalence and reliability.
  
  
  METHODS
  Two LKSs were obtained in 100 patients who underwent ACL reconstruction surgery. First LKS was completed through telephone interview, and second LKS, which was at least 2 weeks later, was completed face-to-face interview at the hospital. To analyze the test-retest reliability, the relative level of agreement between the two modes of administration for LKS was calculated using interclass correlation coefficient (ICC) in 95 % confidence interval.
  
  
  RESULTS
  The mean LKS was 93.01 ± 9.12 (range 59-100) at telephone interview and 93.56 ± 7.93 (range 59-100) at face-to-face interview (p = 0.130). Both the total point and the each item's point were statistically similar (p < 0.05 for each item). The total score was same in 66 (66 %) subjects. The mean difference between two scoring was only 1.83 ± 3.14 points (range 0-15). However, eight (8 %) patients were assigned to different grading groups (excellent, good, fair, and poor). The overall LKS and the each item of the LKS had acceptable test-retest reliability [ICC = 0.954 (95 % CI 0.931-0.969)].
  
  
  CONCLUSIONS
  LKS can be reliably completed through telephone interview, which would provide accurate data similar to face-to-face interview. Researchers can design studies using telephone interview as a mode of administration for LKS or use mix-mode designs.
authors: Orthoapedics and Traumatology Department, Antalya Education and Research Hospital, Kultur mah. Durukent Sit. F Blok D:22, Antalya, Turkey, drozkankose@hotmail.com.
authors: Ozkan
authors: O
authors: Kose
authors: Gokmen
authors: G
authors: Deniz
authors: Hakan
authors: H
authors: Ozcan
authors: Ferhat
authors: F
authors: Guler
mesh_terms: D000293:Adolescent; D000328:Adult; D059549:Anterior Cruciate Ligament Reconstruction / Q000534:rehabilitation*; D001182:Arthroscopy / Q000534:rehabilitation*; D003625:Data Collection; D005260:Female; D006801:Humans; D065466:Lysholm Knee Score / Q000592:standards*; D008297:Male; D008875:Middle Aged; D009819:Office Visits; D019114:Remote Consultation / Q000592:standards*; D015203:Reproducibility of Results; D012189:Retrospective Studies; D013689:Telephone; D055815:Young Adult
references: Clin Orthop Relat Res. 1985 Sep;(198):43-9
references: 4028566
references: BMJ. 2013 Jan 28;346:f167
references: 23358487
references: Am J Sports Med. 2009 Aug;37(8):1499-507
references: 19451096
references: J Public Health (Oxf). 2005 Sep;27(3):281-91
references: 15870099
references: Knee Surg Sports Traumatol Arthrosc. 2013 Mar;21(3):576-83
references: 22407182
references: Musculoskeletal Care. 2006 Dec;4(4):187-203
references: 17117444
references: J Arthroplasty. 2014 Mar;29(3):491-4
references: 24290739
references: Orthopedics. 2012 Aug 1;35(8):e1173-6
references: 22868601
references: J Man Manip Ther. 2010 Jun;18(2):61-3
references: 21655386
references: Am J Sports Med. 1997 Sep-Oct;25(5):642-7
references: 9302469
references: Chiropr Osteopat. 2010 May 26;18:10
references: 20500900
references: Am J Sports Med. 1982 May-Jun;10 (3):150-4
references: 6896798