PMID- 29913660
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20220311
IS  - 1877-8879 (Electronic)
IS  - 1877-8860 (Linking)
VI  - 5
IP  - 1
DP  - 2014 Jan 1
TI  - Reliability and responsiveness of the Norwegian version of the Neck Disability 
      Index.
PG  - 28-33
LID - /j/sjpain.2014.5.issue-1/j.sjpain.2013.10.001/j.sjpain.2013.10.001.xml [pii]
LID - 10.1016/j.sjpain.2013.10.001 [doi]
AB  - Background and aim The Norwegian version of the Neck Disability Index (NDI) has 
      been widely used in previous studies. To our knowledge, the test-retest 
      reliability and responsiveness of the NDI have not been investigated. Thus, the 
      aim of the present study was to investigate the test-retest reliability and 
      responsiveness of the Norwegian version of the NDI in neck pain patients seen in 
      a specialized outpatient clinic. Methods This study included patients referred to 
      the neck and back outpatient clinic at Oslo University Hospital. A total of 255 
      patients were included in the study, of which 42 participated in the test-retest 
      portion of the study. The intraclass correlation coefficient (ICC) was used to 
      assess test-retest reliability. A total of 113 patients participated in the 
      responsiveness analyses. Based on their responses on the Global Rating Scale of 
      Change (GRS), patients were categorized into the following groups: worsened (n = 
      24), unchanged (n = 7) and improved (n = 62). The minimal detectable change (MDC) 
      for the NDI was calculated. Responsiveness was assessed by constructing a 
      Receiver Operating Characteristic curve (ROC curve) to distinguish patients who 
      had improved or worsened from those who remained unchanged. The minimum 
      clinically important difference (MCID) was estimated. Results The test-retest 
      reliability between the baseline scores and the retest NDI scores was very good 
      (ICC = 0.84; 95% CI 0.72-0.91). The ability of the NDI to discriminate between 
      improved and unchanged patients (responsiveness) over time was acceptable based 
      on the ROC curve analysis (AUC = 0.70; 95% CI 0.58-0.82). The estimated MDC for 
      the Norwegian version of the NDI is 12.3%, and the MCID is 16.6%. Conclusion The 
      Norwegian version of the NDI proved to be an instrument with good test-retest 
      reliability and acceptable responsiveness for assessing neck pain-related 
      disability among neck pain patients in a specialized outpatient clinic.
FAU - Johansen, Jan Borre
AU  - Johansen JB
AD  - Department of Physical Medicine and Rehabilitation, Oslo University Hospital, 
      Oslo, Norway.
FAU - Roe, Cecilie
AU  - Roe C
AD  - Department of Physical Medicine and Rehabilitation, Oslo University Hospital, 
      Oslo, Norway.
AD  - Faculty of Medicine, University of Oslo, Oslo, Norway.
FAU - Bakke, Eva
AU  - Bakke E
AD  - Department of Health Sciences, Institute of Health and Society, University of 
      Oslo, Oslo, Norway.
FAU - Mengshoel, Anne Marit
AU  - Mengshoel AM
AD  - Department of Health Sciences, Institute of Health and Society, University of 
      Oslo, Oslo, Norway.
FAU - Andelic, Nada
AU  - Andelic N
AD  - Department of Physical Medicine and Rehabilitation, Oslo University Hospital, 
      Oslo, Norway.
LA  - eng
PT  - Journal Article
DEP - 20140101
PL  - Germany
TA  - Scand J Pain
JT  - Scandinavian journal of pain
JID - 101520867
OTO - NOTNLM
OT  - NDI
OT  - Neck pain
OT  - Responsiveness
OT  - Test-retest reliability
OT  - Validity
EDAT- 2018/06/20 06:00
MHDA- 2018/06/20 06:01
CRDT- 2018/06/20 06:00
PHST- 2013/05/23 00:00 [received]
PHST- 2013/10/17 00:00 [accepted]
PHST- 2018/06/20 06:00 [entrez]
PHST- 2018/06/20 06:00 [pubmed]
PHST- 2018/06/20 06:01 [medline]
AID - /j/sjpain.2014.5.issue-1/j.sjpain.2013.10.001/j.sjpain.2013.10.001.xml [pii]
AID - 10.1016/j.sjpain.2013.10.001 [doi]
PST - epublish
SO  - Scand J Pain. 2014 Jan 1;5(1):28-33. doi: 10.1016/j.sjpain.2013.10.001.