Figure 5From: Modeling the effect of levothyroxine therapy on bone mass density in postmenopausal women: a different approach leads to new inferenceChanges in BMD with respect to time in the spine with shorter time interval. Polynomial regression for changes in regional BMD with respect to time in the spine. The observed data (+) and the linear (--), quadratic (-.) and cubic (-) model, graph of f'(t) vs. t and direction field for the spine. Time interval [0,18].Back to article page