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Table 5 Association between time preference and trial retention

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

Variables

Coefficient

95% CI

Standard error

t-value

Dependent variable: Discount rate (β)

 Loyalty

−0.048

[− 0.107,0.012]

0.030

−1.57

 Old

0.021

[−0.047,0.089]

0.035

0.61

 Male

−0.026

[−0.096,0.045]

0.036

−0.72

 Single

−0.167b

[−0.306,-0.028]

0.071

−2.36

 Child

−0.191c

[−0.303,-0.078]

0.057

−3.32

 Household income

−0.030

[−0.074,0.014]

0.023

−1.32

 Constant

0.509c

[0.187,0.832]

0.164

3.10

Dependent variable: Present-biasedness (α)

 Loyalty

−1.819a

[−3.659,0.022]

0.939

−1.94

 Old

1.290

[−0.295,2.875]

0.809

1.60

 Male

−2.471

[−5.483,0.54]

1.537

−1.61

 Single

−4.089b

[−7.405,-0.773]

1.692

−2.42

 Child

−4.334c

[− 7.593,-1.075]

1.663

−2.61

 Household income

−0.160

[−0.543,0.222]

0.195

−0.82

 Constant

11.045c

[3.376,18.715]

3.913

2.82

Dependent variable: Risk preference (γ)

 Loyalty

−0.031b

[− 0.061,-0.001]

0.015

−2.05

 Old

0.032

[−0.036,0.101]

0.035

0.92

 Male

−0.015

[−0.089,0.058]

0.038

−0.41

 Single

0.055

[−0.036,0.146]

0.046

1.18

 Child

−0.014

[−0.098,0.07]

0.043

−0.32

 Household income

0.002

[−0.038,0.042]

0.020

0.12

 Constant

0.789c

[0.512,1.067]

0.142

5.57

 μRA

0.142c

[0.087,0.197]

0.028

5.07

 μDR

0.129

[−0.075,0.333]

0.104

1.24

 Log Likelihood

− 3376.29

   

 Number of observations

6650

   
  1. Note: An ordinal variable Loyalty was constructed to indicate retention The four categories included: 0 = if a participant never used the PAL scheme (0 mins/week throughout the 12-week intervention); 1 = if a participant did some physical activities (> 0 mins/week) during the initial 4 weeks but has 0 min for the rest of the intervention; 2 = if a participant did some physical activities in both week 1–4 and week 5–8 but 0 min for the rest of the intervention; 3 = if participants had some physical activities throughout the intervention (week 1–4, week 5–8, week 9–12). Number of participants for each category: Category 0 = 17; Category 1 = 15; Category 2 = 11; Category 3 = 52. aindicates 10%, bindicates 5% and cindicates 1%. Standard errors are clustered at the individual level