Molla Deribie

The Heckman model of dietary diversity score:

the case of Akaki Small-Scale Irrigation Scheme

Conference place: Desalegn Hotel, Addis Ababa,Ethiopia, January 14-16 2016By: Molla Deribie Friday, January 15, 2016 1

Content

• Introduction

• Objectives

• Methodology

• Result and Discussion

• Conclusion and Recommendation

• Acknowledgement

Friday, January 15, 2016 2

Introduction

• Information on role of Akaki small scale irrigation scheme on

farming households dietary diversity;

• The way how this research has done and its finding,

generalizations and future course of actions;

• Small scale irrigation scheme as a means of household dietary

diversity;

• Agriculture as a means of a greater dietary diversity and

calorie availability (Emmanuel and Thomas, 2012);


Objectives

• to evaluate impact of Akaki small scale irrigation scheme

on farm households’ dietary diversity score;

• to identify determinants of farm households’ dietary

diversity score and

• to forward actionable suggestion.


Methodology

• Research design:

Causal;

• Sample size and sampling procedure:

With stratified random sampling technique;

= 246, irrigators (123) and non –irrigators (123)

• Data sources and collection method:

primary data on economic concepts with interview;

• Data analysis:

inferential statistics (Hechman model);


Result and Discussion

Variables Heckman analysis Marginal effect

Coef. Std.err. z p>|z|

w 0.0040166 0.01152 0.35 0.727

fs -0.0012122 0.0058062 -0.21 0.835

sex 0.2694272 0.0383332 7.03 0.000

ls 0.0531168 0.0300659 1.77 0.077

ed 0.3915751 0.046395 8.44 0.000

offarmi 0.000366 0.0000816 4.48 0.000

dhomeland -0.0817047 0.038696 -2.11 0.035

onfarmi 7.95e-06 6.14e-06 1.29 0.195

Exp 0.0256571 0.0059585 4.31 0.000

nonfarmi 0.0000151 8.86e-06 1.70 0.089

cons -0.021203 0.00466486 -0.45 0.649

Dependant variable Households dietary diversity score

sex 1.49e-06 2630.316 0.00 1.000 0.2694272*

offarmi 6.28e-09 6.491465 0.00 1.000 0.000366*

dhomeland 3.64e-06 3331.409 0.00 1.000 -0.0817047*

onfarmi 3.85e-10 0.5292129 0.00 1.000 7.95e-06

exp 2.12e-07 451.9884 0.00 1.000 0.0000151

generator used 1.51e-05 1016.016 0.00 1.000 N/A

nonfarmi 6.56e-10 0.7577287 0.00 1.000 0.0256571

lambda -0.0003356 94.20654 0.00 1.000 N/A

cons 6.109908 1689.125 0.00 0.997 N/A

Dependant variable Household Irrigation participation

Number of observations 246

Log likelihood 263.5313

Wald chi2(10) 5020.43

Prob>chi2 0.0000

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Result and Discussion...

• at a 0.05 probability level,

lambda is insignificant; this implies Akaki small scale

irrigation scheme has no impact on HHDDS;

estimates of sex, ed, offarmi, dhomeland and exp. are

significant; this implies they are determinates of HHDDS;

estimates of sex, offarmi and dhomeland are significant;

this implies they are determinates of HHDDS.


Conclusion and Recommendation

• Akaki small scale irrigation scheme has no impact on

households dietary diversity score;

• Sex, school year, off farm income, distance and irrigation

experience are determinates of dietary diversity score;

• Head of farming households should be male;

• Government should open farmers field school;

• farming households should share experience and create

means of off farm income source.

Friday, January 15, 20168

Acknowledgement

• NFSRD

• OMMICS publishing group and

• Social Science Research Network


Thank you!


Molla Deribie

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