Nonlinear regression is a form of regression analysis in which data fit to a model is expressed as a mathematical function.

Objectives: Exposure to ambient temperature can affect mortality levels for days or weeks following exposure, making modelling such effects in regression analysis of daily time-series data complex.

M. E. Greene, O. Rolfson, G. Garellick, M. Gordon, S. Nemes, Improved statistical analysis of pre- and post-treatment patient-reported outcome measures (PROMs): the applicability of piecewise linear ...