Abstract
STUDY DESIGN. Prospective, single-cohort study. OBJECTIVE. To assess the minimal clinically important change (MCIC) on the Neck Disability Index (NDI) and the Numerical Rating Scale (NRS) for pain in patients with neck pain. SUMMARY OF BACKGROUND DATA. Both measurement instruments are frequently used in research and clinical practice, but which changes are clinically relevant is still unknown. METHODS. The MCIC was estimated with 2 different methods, both integrating an anchor-based and distribution-based approach: the minimal detectable change (MDC) and the optimal cutoff point of the ROC curve. The study population consisted of 183 patients with nonspecific neck pain. RESULTS. The results show an MDC of 10.5 points for the NDI (scale range, 0-50) and 4.3 points for the NRS (scale range, 0-10), and optimal cutoff points of the ROC curve of 3.5 for the NDI and 2.5 for the NRS. CONCLUSION. The estimated MCIC should be used as an indication for relevant changes in clinical practice. Using the optimal cutoff point of the ROC curve, false positives and false negatives are equally weighted; and if there are no objections doing so, the optimal cutoff point of the ROC curve may be a good choice.
Original language | English |
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Pages (from-to) | 3047-3051 |
Number of pages | 5 |
Journal | Spine |
Volume | 32 |
Issue number | 26 |
DOIs | |
Publication status | Published - 1 Dec 2007 |
Cite this
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Minimal clinically important change of the neck disability index and the numerical rating scale for patients with neck pain. / Pool, Jan J.M.; Ostelo, Raymond W.J.G.; Hoving, Jan L.; Bouter, Lex M.; De Vet, Henrica C.W.
In: Spine, Vol. 32, No. 26, 01.12.2007, p. 3047-3051.Research output: Contribution to journal › Article › Academic › peer-review
TY - JOUR
T1 - Minimal clinically important change of the neck disability index and the numerical rating scale for patients with neck pain
AU - Pool, Jan J.M.
AU - Ostelo, Raymond W.J.G.
AU - Hoving, Jan L.
AU - Bouter, Lex M.
AU - De Vet, Henrica C.W.
PY - 2007/12/1
Y1 - 2007/12/1
N2 - STUDY DESIGN. Prospective, single-cohort study. OBJECTIVE. To assess the minimal clinically important change (MCIC) on the Neck Disability Index (NDI) and the Numerical Rating Scale (NRS) for pain in patients with neck pain. SUMMARY OF BACKGROUND DATA. Both measurement instruments are frequently used in research and clinical practice, but which changes are clinically relevant is still unknown. METHODS. The MCIC was estimated with 2 different methods, both integrating an anchor-based and distribution-based approach: the minimal detectable change (MDC) and the optimal cutoff point of the ROC curve. The study population consisted of 183 patients with nonspecific neck pain. RESULTS. The results show an MDC of 10.5 points for the NDI (scale range, 0-50) and 4.3 points for the NRS (scale range, 0-10), and optimal cutoff points of the ROC curve of 3.5 for the NDI and 2.5 for the NRS. CONCLUSION. The estimated MCIC should be used as an indication for relevant changes in clinical practice. Using the optimal cutoff point of the ROC curve, false positives and false negatives are equally weighted; and if there are no objections doing so, the optimal cutoff point of the ROC curve may be a good choice.
AB - STUDY DESIGN. Prospective, single-cohort study. OBJECTIVE. To assess the minimal clinically important change (MCIC) on the Neck Disability Index (NDI) and the Numerical Rating Scale (NRS) for pain in patients with neck pain. SUMMARY OF BACKGROUND DATA. Both measurement instruments are frequently used in research and clinical practice, but which changes are clinically relevant is still unknown. METHODS. The MCIC was estimated with 2 different methods, both integrating an anchor-based and distribution-based approach: the minimal detectable change (MDC) and the optimal cutoff point of the ROC curve. The study population consisted of 183 patients with nonspecific neck pain. RESULTS. The results show an MDC of 10.5 points for the NDI (scale range, 0-50) and 4.3 points for the NRS (scale range, 0-10), and optimal cutoff points of the ROC curve of 3.5 for the NDI and 2.5 for the NRS. CONCLUSION. The estimated MCIC should be used as an indication for relevant changes in clinical practice. Using the optimal cutoff point of the ROC curve, false positives and false negatives are equally weighted; and if there are no objections doing so, the optimal cutoff point of the ROC curve may be a good choice.
KW - Disability
KW - Minimal clinically important change
KW - Neck pain
KW - Pain
UR - http://www.scopus.com/inward/record.url?scp=37349044632&partnerID=8YFLogxK
U2 - 10.1097/BRS.0b013e31815cf75b
DO - 10.1097/BRS.0b013e31815cf75b
M3 - Article
VL - 32
SP - 3047
EP - 3051
JO - Spine
JF - Spine
SN - 0362-2436
IS - 26
ER -