PMID- 21411827
OWN - NLM
STAT- MEDLINE
DCOM- 20110531
LR  - 20220409
IS  - 1056-6716 (Print)
IS  - 1056-6716 (Linking)
VI  - 20
IP  - 1
DP  - 2011 Feb
TI  - Responsiveness of the numeric pain rating scale in patients with shoulder pain 
      and the effect of surgical status.
PG  - 115-28
AB  - CONTEXT: The Numeric Pain Rating Scale (NPRS) is commonly used to assess pain. 
      Change in the NPRS across time can be interpreted with responsiveness indices. 
      OBJECTIVE: To determine the minimal clinically important difference (MCID) of the 
      NPRS. DESIGN: Single-group repeated measures. SETTING: Outpatient rehabilitation 
      clinics. PATIENTS: Patients with shoulder pain (N = 136). MAIN OUTCOME MEASURES: 
      At the initial evaluation patients completed the Penn Shoulder Score (PSS), which 
      includes pain, satisfaction, and function sections. Pain was measured using an 
      11-point NPRS for 3 conditions of pain: at rest, with normal daily activities, 
      and with strenuous activities. The NPRS average was calculated by averaging the 
      NPRS scores for 3 conditions of pain. The final PSS was completed after 3-4 wk of 
      rehabilitation. To determine the MCID for the NPRS average, the minimal 
      detectible change of 8.6 points for the PSS function scale (0-60 points) was used 
      as an external criterion anchor to classify patients as meaningfully improved 
      (>/=8.6 point change) or not improved (<8.6-point change). The MCID for the NPRS 
      average was also determined for subgroups of surgical and nonsurgical patients. 
      Cohen's effect sizes were calculated as a measure of group responsiveness for the 
      NPRS average. RESULTS: Using a receiver-operating-characteristic analysis, the 
      MCID for the average NPRS for all patients was 2.17, and it was 2.17 for both the 
      surgical and nonsurgical subgroup: area-under-the-curve range .74-.76 (95%CI: 
      .55-.95). The effect size for all patients was 1.84, and it was 1.51 and 1.94 for 
      the surgical and nonsurgical groups, respectively. CONCLUSIONS: The NPRS average 
      of 3 pain questions demonstrated responsiveness with an MCID of 2.17 in patients 
      with shoulder pain receiving rehabilitation for 3-4 wk. The effect sizes 
      indicated a large effect. However, responsiveness values are not static. Further 
      research is indicated to assess responsiveness of the NPRS average in different 
      types of patients with shoulder pain.
FAU - Michener, Lori A
AU  - Michener LA
AD  - Dept of Physical Therapy, Virginia Commonwealth University, Richmond, VA, USA. 
      lamichen@vcu.edu
FAU - Snyder, Alison R
AU  - Snyder AR
FAU - Leggin, Brian G
AU  - Leggin BG
LA  - eng
PT  - Journal Article
PL  - United States
TA  - J Sport Rehabil
JT  - Journal of sport rehabilitation
JID - 9206500
SB  - IM
MH  - Adult
MH  - Aged
MH  - Area Under Curve
MH  - Data Interpretation, Statistical
MH  - Female
MH  - Humans
MH  - Male
MH  - Middle Aged
MH  - Outcome Assessment, Health Care/*methods
MH  - Pain Measurement/*methods
MH  - ROC Curve
MH  - Self Report
MH  - Shoulder Joint/physiopathology/*surgery
MH  - Shoulder Pain/diagnosis/rehabilitation/*surgery
MH  - *Surveys and Questionnaires
MH  - Treatment Outcome
EDAT- 2011/03/18 06:00
MHDA- 2011/06/01 06:00
CRDT- 2011/03/18 06:00
PHST- 2011/03/18 06:00 [entrez]
PHST- 2011/03/18 06:00 [pubmed]
PHST- 2011/06/01 06:00 [medline]
AID - 10.1123/jsr.20.1.115 [doi]
PST - ppublish
SO  - J Sport Rehabil. 2011 Feb;20(1):115-28. doi: 10.1123/jsr.20.1.115.