1. The influence of age and experience on aircraft accident rates Publication: [Washington, D.C.] : Statistics Branch, Office of the Air Surgeon, 12 December 1945 Subject(s): Accidents, Aviation -- statistics & numerical dataMilitary Personnel -- statistics & numerical dataAge FactorsWorld War IIUnited States
2. Severe maternal morbidity in Pennsylvania Publication: Harrisburg, PA : Pennsylvania Health Care Cost Containment Council, August 2023 Subject(s): Morbidity -- trendsPregnancy Complications -- epidemiologyAge FactorsPregnancy Complications -- ethnologySocioeconomic FactorsPennsylvania
