The Journal of Clinical Endocrinology & Metabolism · 2011 · 337 citations · 27 references
These findings demonstrate, for the first time, the relationship between a flatter slope in cortisol levels across the day and an increased risk of cardiovascular disease mortality in a nonclinical population.
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The MOS 36-ltem Short-Form Health Survey (SF-36)
John E. Ware, Cathy D. Sherbourne · Medical Care · 1992 · 29.1K citations
Flexible regression models with cubic splines
Sylvain Durrleman, Richard Simon · Statistics in Medicine · 1989 · 2.6K citations
Peter Peduzzi, John Concato, Alvan R. Feinstein et al. · Journal of Clinical Epidemiology · 1995 · 2.1K citations · Full text