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Table 5 Determinants of WTP premium for the iron-enriched bean variety in Guatemala—random effects model, right-censored model and interval-censored model

From: Consumer acceptance of an iron bean variety in Northwest Guatemala: the role of information and repeated messaging

  Random effect model (1) Right censored model (Tobit) (2) Interval censored model (3)
Information once 0.36 (0.29) 0.94*** (0.57) 0.41** (0.17)
Information repetition − 1.17 (0.20) − 0.10 (0.40) 0.18 (0.15)
Variety delivery order − 0.28** (0.12) − 0.49** (0.0.24) − 0.43** (0.17)
Men × information once 0.07 (0.27) 0.02 (0.55) 0.43 (0.30)
Men × Information repetition 0.38** (0.16) 0.80*** (0.29) 0.35 (0.26)
IRI × information once − 0.26** (0.12) − 0.43* (0.23) − 0.12 (0.12)
IRI × Information repetition 0.13*** (0.04) 0.18** (0.09) − 0.11 (0.09)
Education × information once − 0.04 (0.03) − 0.18*** (0.07) − 0.04 (0.03)
Education × information repetition 0.05 (0.03) 0.08 (0.07) − 0.02 (0.03)
Variety delivery order × information once 0.53** (0.22) 0.05** (0.04) 0.62** (0.24)
Variety delivery order × information repetition − 0.00 (0.00) − 0.02 (0.01) 0.32 (0.26)
Male 0.03 (0.16) 0.23 (0.31) − 0.27 (0.19)
Age − 0.00 (0.00) − 0.02*** (0.01) − 0.01** (0.00)
Area planted with beans in 2013 0.00*** (0.00) 0.00*** (0.00) 0.00 (0.00)
Produce beans frequently − 0.07 (0.12) − 0.28 (0.25) 0.03 (0.12)
Amount of beans stored at home 0.00 (0.00) 0.02** (0.01) 0.00 (0.00)
Purchase beans frequently − 0.02 (0.05) 0.05 (0.11) − 0.01 (0.03)
Consume beans frequently − 0.00 (0.03) 0.00* (0.07) 0.04 (0.02)
Poverty index 0.04 (0.11) 0.31 (0.22) 0.37* (0.21)
Food frequency index − 0.00*** (0.00) − 0.02*** (0.01) − 0.00 (0.00)
Monthly expenses 0.00 (0.00) 0.00 (0.00) 0.00 (0.05)
Have met any people in the community 0.02 (0.05) 0.07 (0.10) − 0.21 (0.15)
Have heard about iron in food − 0.22 (0.15) − 0.40 (0.30) 0.45 (0.36)
_cons 0.39 (0.34) 1.66** (0.70) − 0.05 (0.04)
N 359 359 359
Likelihood-ratio test for heteroscedasticity (Prob > chi2) 0.14 0.23 0.18
F statistic/Chi2 0.00 0.00 0.00
Prob > F/Prob>Chi2 89.52 106.07 30.53
R-squared 0.14 0.13 0.13
AIC   1350 1420
  1. Standard errors in parentheses
  2. *p < 0.10, **p < 0.05, ***p < 0.01