PMID- 18164333
OWN - NLM
STAT- MEDLINE
DCOM- 20080204
LR  - 20220408
IS  - 1532-821X (Electronic)
IS  - 0003-9993 (Linking)
VI  - 89
IP  - 1
DP  - 2008 Jan
TI  - Psychometric properties of the Neck Disability Index and Numeric Pain Rating 
      Scale in patients with mechanical neck pain.
PG  - 69-74
LID - 10.1016/j.apmr.2007.08.126 [doi]
AB  - OBJECTIVE: To examine the psychometric properties including test-retest 
      reliability, construct validity, and minimum levels of detectable and clinically 
      important change for the Neck Disability Index (NDI) and the numeric rating scale 
      (NRS) for pain in a cohort of patients with neck pain. DESIGN: Single-group 
      repeated-measures design. SETTING: Outpatient physical therapy (PT) clinics. 
      PARTICIPANTS: Patients (N=137) presenting to PT with a primary report of neck 
      pain. INTERVENTIONS: Not applicable. MAIN OUTCOME MEASURES: All patients 
      completed the NDI and the NRS at the baseline examination and at a follow-up. At 
      the time of the follow-up, all patients also completed the global rating of 
      change, which was used to dichotomize patients as improved or stable. Baseline 
      and follow-up scores were used to determine the test-retest reliability, 
      construct validity, and minimal levels of detectable and clinically important 
      change for both the NDI and NRS. RESULTS: Test-retest reliability was calculated 
      using an intraclass correlation coefficient (ICC) (NDI ICC=.50; 95% confidence 
      interval [CI], .25-.67; NRS ICC=.76; 95% CI, .51-.87). The area under the curve 
      was .83 (95% CI, .75-.90) for the NDI score and .85 (95% CI, .78-.93) for the NRS 
      score for determining between stable and improved patients. Thresholds for the 
      minimum clinically important difference (MCID) for the NDI were 19-percentage 
      points and 1.3 for the NRS. CONCLUSIONS: Both the NDI and NRS exhibit fair to 
      moderate test-retest reliability in patients with mechanical neck pain. Both 
      instruments also showed adequate responsiveness in this patient population. 
      However, the MCID required to be certain that the change in scores has surpassed 
      a level that could be contributed to measurement error for the NDI was twice that 
      which has previously been reported. Therefore the ongoing analyses of the 
      properties of the NDI in a patient population with neck pain are warranted.
FAU - Cleland, Joshua A
AU  - Cleland JA
AD  - Department of Physical Therapy, Franklin Pierce College, Concord, NH 03301, USA. 
      joshcleland@comcast.net
FAU - Childs, John D
AU  - Childs JD
FAU - Whitman, Julie M
AU  - Whitman JM
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
PL  - United States
TA  - Arch Phys Med Rehabil
JT  - Archives of physical medicine and rehabilitation
JID - 2985158R
SB  - IM
CIN - Arch Phys Med Rehabil. 2008 Jul;89(7):1414-5; author reply 1415-6. PMID: 18586147
MH  - Adolescent
MH  - Adult
MH  - Female
MH  - Health Status Indicators
MH  - Humans
MH  - Male
MH  - Middle Aged
MH  - Neck Pain/physiopathology/*rehabilitation
MH  - *Pain Measurement
MH  - Psychometrics
MH  - ROC Curve
MH  - Reproducibility of Results
MH  - Stress, Mechanical
EDAT- 2008/01/01 09:00
MHDA- 2008/02/05 09:00
CRDT- 2008/01/01 09:00
PHST- 2007/07/10 00:00 [received]
PHST- 2007/08/01 00:00 [revised]
PHST- 2007/08/03 00:00 [accepted]
PHST- 2008/01/01 09:00 [pubmed]
PHST- 2008/02/05 09:00 [medline]
PHST- 2008/01/01 09:00 [entrez]
AID - S0003-9993(07)01604-8 [pii]
AID - 10.1016/j.apmr.2007.08.126 [doi]
PST - ppublish
SO  - Arch Phys Med Rehabil. 2008 Jan;89(1):69-74. doi: 10.1016/j.apmr.2007.08.126.