Association between time preference, present-bias and physical activity: implications for designing behavior change interventions

Table 2 Estimations of discount rate and present-biasedness for the whole sample

Parameters	Estimate	Standard error	Lower 95% confidence interval	Upper 95% confidence interval
A. Assuming risk aversion
Discount rate (β)	0.29	0.03	0.22	0.35
Present-biasedness (α)	3.23	0.57	2.12	4.35
Risk preference (γ)	0.61	0.08	0.45	0.76
μ_RA	0.12	0.01	0.09	0.15
μ_DR	0.30	0.13	0.04	0.56
Log likelihood	− 6411.17
Number of observations	12,320
B. Assuming risk neutrality
Discount rate (β)	0.53	0.04	0.45	0.60
Present-biasedness (α)	3.13	0.56	2.03	4.23
μ_DR	8.87	0.58	7.73	10.00
Log likelihood	− 6745.38
Number of observations	12,320

ISSN: 1471-2458