PMID- 23850308
OWN - NLM
STAT- MEDLINE
DCOM- 20140713
LR  - 20220408
IS  - 1532-6500 (Electronic)
IS  - 1058-2746 (Linking)
VI  - 22
IP  - 12
DP  - 2013 Dec
TI  - Investigating minimal clinically important difference for Constant score in 
      patients undergoing rotator cuff surgery.
PG  - 1650-5
LID - S1058-2746(13)00231-0 [pii]
LID - 10.1016/j.jse.2013.05.002 [doi]
AB  - BACKGROUND: The minimal clinically important difference (MCID) is increasingly 
      used to evaluate treatment effectiveness. The MCID for the Constant score has not 
      been previously reported. MATERIALS AND METHODS: A prospectively collected cohort 
      of 802 consecutive shoulders with arthroscopically treated partial- or 
      full-thickness rotator cuff tears was analyzed. The Constant score was measured 
      preoperatively and at 3 months and 1 year postoperatively. At follow-up visits, 
      the patients were asked a simple 2-stage question: Is the shoulder better or 
      worse after the operation compared with the preoperative state? This single 
      2-level question was used as an indicator of patient satisfaction and as an 
      anchor to calculate the MCID for the Constant score. RESULTS: At 1 year, 781 
      (97.4%) patients (474 men, 307 women) were available for follow-up. The 
      preoperative Constant score was 53.1 (SD 17.2) in all patients, 56.2 (SD 17.4) in 
      male patients, and 48.2 (SD 15.6) in female patients. Postoperatively at 3 
      months, the scores were 61.7 (SD 16.4) in all patients, 65.1 (SD 16.1) in male 
      patients, and 56.8 (SD 15.5) in female patients. At 1 year, the scores were 75.9 
      (SD 15.2) in all patients, 79.0 (SD 14.9) in male patients, and 71.0 (SD 14.3) in 
      female patients. At 3 months postoperatively, 92.2% of male patients and 87.2% of 
      female patients were satisfied with the outcome (P = .027); at 1 year, the 
      satisfaction was 93.2% and 89.5%, respectively (P = .067). Five different 
      statistical approaches yielded 5 different MCID estimates (range, 2-16). The 
      3-month mean change estimate of MCID was 10.4 points. CONCLUSION: Our study 
      demonstrates an MCID estimate of 10.4 points as the threshold for the Constant 
      score in patients with rotator cuff tear. LEVEL OF EVIDENCE: Basic science study, 
      validation of outcomes instruments/classification systems.
CI  - Copyright (c) 2013 Journal of Shoulder and Elbow Surgery Board of Trustees. 
      Published by Mosby, Inc. All rights reserved.
FAU - Kukkonen, Juha
AU  - Kukkonen J
AD  - Department of Orthopaedics and Traumatology, Turku University Hospital, Turku, 
      Finland. Electronic address: jupeku@utu.fi.
FAU - Kauko, Tommi
AU  - Kauko T
FAU - Vahlberg, Tero
AU  - Vahlberg T
FAU - Joukainen, Antti
AU  - Joukainen A
FAU - Aarimaa, Ville
AU  - Aarimaa V
LA  - eng
PT  - Journal Article
DEP - 20130712
PL  - United States
TA  - J Shoulder Elbow Surg
JT  - Journal of shoulder and elbow surgery
JID - 9206499
SB  - IM
MH  - Activities of Daily Living
MH  - Arthralgia/surgery
MH  - Arthroscopy
MH  - Female
MH  - *Health Status Indicators
MH  - Humans
MH  - Male
MH  - Muscle Strength
MH  - Patient Satisfaction
MH  - Range of Motion, Articular
MH  - Rotator Cuff/*surgery
MH  - Rotator Cuff Injuries
MH  - Shoulder Joint/*surgery
MH  - Tendon Injuries/*diagnosis/surgery
MH  - Treatment Outcome
OTO - NOTNLM
OT  - Basic Science Study
OT  - Constant score
OT  - Validation of Outcomes Instruments/Classification Systems
OT  - minimal clinically important difference
OT  - rotator cuff tear
EDAT- 2013/07/16 06:00
MHDA- 2014/07/14 06:00
CRDT- 2013/07/16 06:00
PHST- 2012/12/20 00:00 [received]
PHST- 2013/04/21 00:00 [revised]
PHST- 2013/05/02 00:00 [accepted]
PHST- 2013/07/16 06:00 [entrez]
PHST- 2013/07/16 06:00 [pubmed]
PHST- 2014/07/14 06:00 [medline]
AID - S1058-2746(13)00231-0 [pii]
AID - 10.1016/j.jse.2013.05.002 [doi]
PST - ppublish
SO  - J Shoulder Elbow Surg. 2013 Dec;22(12):1650-5. doi: 10.1016/j.jse.2013.05.002. 
      Epub 2013 Jul 12.