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. Author manuscript; available in PMC: 2018 Sep 25.
Published in final edited form as: Obesity (Silver Spring). 2018 Mar 25;26(5):927–933. doi: 10.1002/oby.22135

Table 2.

Baseline parameter values for the obesity epidemic model

Description Notation Estimated
values (US)		 Estimated
values (UK)		 Units Method of
estimation
Birth rate v 0.0144 0.0123 1/year Central Intelligence Agency World Factbook26
The childhood obesity risk given the mother is nonobese k1 0.0000 0.0000 nondimensional Assumed
The childhood obesity risk given the mother is obese k2 0.1901 0.1703 nondimensional Fit to initial trends
Coefficient for the transition rate due to social contagious weight gain risk for the individuals with genotype aa and Aa βaa, βAa 0.0122 0.0054 1/year Fit to initial trends
Coefficient for the transition rate due to social contagious weight gain risk for the individuals with genotype AA βAA 0.1838 0.4954 1/year Fit to initial trends
The transition rate due to spontaneous weight gain risk for the individuals with genotype aa and Aa ηaa, ηAa 0.00270 0.00002 1/year Fit to initial trends
The transition rate due to spontaneous weight gain risk for the individuals with genotype AA ηAA 0.0046 0.0117 1/year Fit to initial trends
Death rate μ 0.0144 0.0123 1/year Assumed to be same as birth rate