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. 2011 Feb 23;13(3):277–287. doi: 10.1007/s10198-011-0304-4

Table 4.

Estimation results of regression models (reduced) of dependent variables

Independent variables Dependent variables
Number of days Total time Meet recommended level No. of days (vigorous activity)
Coef.a ME (Elas’ty)b Coef.a ME (Elas’ty)b Coef.a ME (Elas’ty)b Coef.a ME (Elas’ty)b
Unit price
 ‘Fixed’ price 0.00 0.04 (0.09) 0.01** 0.01 (0.30) 0.03** 0.01 (1.05) 0.01** 0.07 (0.20)
 ‘Variable’ price −0.13*** −1.14 (−0.24) −0.05 −0.05 (−0.09) −0.02 −0.00 (−0.04) −0.00 −0.03 (−0.01)
 Time price (travel time) −0.02*** −0.21 (−0.47) −0.03*** −0.03 (−0.64) −0.07** −0.02 (−2.15) −0.02** −0.13 (−0.36)
Perceived benefits
 To relax, forget about your cares 0.44** 3.41 0.40 0.40 0.83 0.18 0.15 1.02
 To feel a sense of achievement −0.48 −5.29 −0.19 −0.19 −0.71 −7.05
 To learn new things −0.11 −0.98 0.13 0.13
 To control or lose weight −0.64 −0.90 0.35 2.27
 To look good 1.40** 6.71
Control variables
 Personal income (high) 0.30* 2.76 0.19 0.19 0.77 0.19 0.03 0.20
 Age −0.06*** −0.54 (−1.60)
 Gender (male) 0.69** 0.69 0.65** 4.33
 No. of observations 47 47 47 47
 Constant 3.75 5.71 −2.02 1.55
 Linktest p = 0.20 p = 0.95 p = 0.36 p = 0.39
 Goodness of fit p = 0.66d
 Test for heteroskedasticity p = 0.44c
 Normality test p = 0.43
 Adjusted R squared 0.38
 Pseudo R squared 0.18 0.41 0.14
 Akaike inform. criterion (AIC) 284.63 154.50 69.80 321.11
 Bayesian inform. criterion (BIC) 310.53 132.30 53.15 293.36

aSignificance level of 1% (***), 5% (**), 10% (*)

bMarginal effects (Elasticity calculated for only continuous variables)

cChi-square (1) = 0.58

dChi-square (8) = 5.90. Average variance inflation factors (VIF) for the independent variables were 1.5, and average tolerance levels were 0.7