Two engineering control interventions (PS and VL) will be tested for their effectiveness in reducing self-reported pain in multiple body parts (neck, shoulder, back and knees) and injury records of 960 employees performing baggage handling tasks using a prospective experimental design. Information on WMSD risk factors including job rotation, duration of MMH, working methods, personal and psychosocial status of workers will be collected. A complete randomization nested in crew and shift sampling strategy will be used for recruiting study participants. WMSD risk and incidence data will be collected at baseline, 1 and 2 years after implementation of the two interventions. The effectiveness of the interventions will be assessed by a significant reduction in WMSD risks or incidence rates at the end of the two follow-up periods. Additionally¸ through the prospective study design, a potential exposure-response relationship between the WMSD physical risk factors and WMSD incidence, adjusted for personal and psychosocial factors, will be evaluated for airport baggage handlers.
On behalf of this Federal agency, I certify that the collection of information encompassed by this request complies with 5 CFR 1320.9 and the related provisions of 5 CFR 1320.8(b)(3).
The following is a summary of the topics, regarding the proposed collection of information, that the certification covers:
(i) Why the information is being collected;
(ii) Use of information;
(iii) Burden estimate;
(iv) Nature of response (voluntary, required for a benefit, or mandatory);
(v) Nature and extent of confidentiality; and
(vi) Need to display currently valid OMB control number;
If you are unable to certify compliance with any of these provisions, identify the item by leaving the box unchecked and explain the reason in the Supporting Statement.