1. McAbee RR, Wilkinson WE. Back injuries and registered nurses. AAOHN J. 1988;36:106–12.[PubMed] Smedley J, Egger P, Cooper C. et al. 2-3. Data on file. Available upon request. 4. Bureau of Labor Statistics. Case and Demographic Incidence Rates. In this figure, “hospitals” represents NAICS 622, which covers all types of hospitals. “Construction” represents NAICS supersector GP1CON, “manufacturing” represents NAICS supersector GP1MFG, and “professional and business services” represents NAICS supersector SP1PBS. Data are limited to private industry.