Attachment L-3 Descriptions of Outcome Measures Revised 11_1_11

Attachment L-3:

Descriptions of Outcome Measures for MSD Intervention Study

OI: MSD Symptoms (Individual employee level) Rated by employees impacted by target interventions Collected at baseline and every 3 months from baseline through completion Participants will also be asked to report severe episodes of back or shoulder pain that occurred within the last 3 months Ordinal data (but often treated as continuous when scores are averaged)
Label	Description	Comments
OIa	--NASS Lumbar Spine Outcome Assessment Instrument - 17 items with a 6-point response scale: None of the time (=1) - all the time (=6); not at all bothersome (=1) - extremely bothersome (=6) Notes: Factor analysis (Daltory et al, 1996) has identified two scales: 1) Pain & Disability scale: items on frequency and bothersomeness of back pain, plus nine items on disability because of pain, for a total of 11 items (questions 1a-b, 5-13). The mean score of this scale will be calculated. (OIa-1) 2) Neurogenic Symptom scale: six items on frequency and bothersomeness of leg or foot pain, numbness, and tingling (questions 4a-b, 5a-b, 6a-b). The mean score of this scale will be calculated. (OIa-2) The NASS outcome has been found to have acceptability, high re-test reliability, internal reliability, and validity for low back pain and disability (Daltroy et al 1996; Schochat et al 2000; Pose et al 1999; Padua et al 2001; Bosković et al 2009; Schneider et al 2007; Schluessmann et al 2009; Sigl et al 2006; Weigl et al 2006; Schaeren et al 2005). See Attachment H-1 for a copy of the NASS instrument.	Primary outcome Example null hypotheses: OIa-1: There will be no difference between mean Pain & Disability scale score ratios (pre/ post intervention scores) when groups are compared (focusing on time period Baseline A to B) OIa-2: Duration of intervention will not be significantly associated with post mean back Pain & Disability scale score declines
OIb	--Quick DASH Outcome Measure with Work Module Option DASH stands for "Disabilities of the Arm, Shoulder and Hand." The Quick DASH Outcome Measure is a self-reported questionnaire designed to measure physical function and symptoms in people with any of several MSD of the upper limb. The Quick DASH Outcome Measure is scored in two components: the disability/symptom section (11 items, scored 1-5) and the optional Work section (4 items, scored 1-5). (Beaton et al 2001) See Attachment H-2 for a copy of the Quick DASH instrument.	Secondary outcome Example null hypotheses: OIb-1: There will be no difference between mean DASH disability/symptom score ratios (pre/ post intervention scores) when groups are compared (focusing on time period Baseline A to B) OIb-2: Duration of intervention will not be significantly associated with post mean DASH disability/symptom score declines
OIc	--Borg CR-10 RPE (Ratings of perceived exertion) (Borg, 1982) Please rate the OVERALL PHYSICAL EFFORT level demanded by your job today. 0 = Nothing at all; 0.5 = Extremely weak (just noticeable); 1 = Very Weak; 2 = Weak (light); 3 = Moderate; 4 ; 5 = Strong; 6; 7 = Very Strong; 8; 9; 10 = Extremely strong (almost max); . = Maximal;	Secondary outcome