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Table 3 Panel fixed effect estimates of the Cobb–Douglas farm production function

From: Revisiting nutrition–labor productivity link: new empirical evidence from farm households in Ethiopia

Independent variables

(I)

(II)

(III)

Food consumption score

0.160*

0.159*

0.187**

 

(0.0881)

(0.0887)

(0.0926)

Food consumption score squared

− 0.0177

− 0.0170

− 0.0210

 

(0.0156)

(0.0157)

(0.0161)

Health (ADLI)

0.249

0.401

0.414

 

(0.940)

(0.937)

(0.903)

Measured land

2.974***

2.968***

2.972***

 

(0.173)

(0.173)

(0.174)

Household labor (person days)

0.0564***

0.0566***

0.0573***

 

(0.0108)

(0.0109)

(0.0109)

Hired labor (person days)

0.0126

0.0123

0.0108

 

(0.0151)

(0.0153)

(0.0151)

Shared labor (person days)

0.0538***

0.0515***

0.0511***

 

(0.0126)

(0.0129)

(0.0129)

Fertilizer in kg

0.0692***

0.0691***

0.0696***

 

(0.00876)

(0.00878)

(0.00888)

Improved seed in kg

0.0231

0.0234

0.0222

 

(0.0151)

(0.0154)

(0.0154)

Number of plots

 

− 0.0131

− 0.0140

  

(0.0153)

(0.0154)

Head age

 

0.0461

0.0258

  

(0.138)

(0.136)

Household size

 

− 0.0686

− 0.0650

  

(0.0686)

(0.0694)

Number of crops

 

0.0386

0.0382

  

(0.0635)

(0.0629)

Irrigation dummy

  

0.0247

   

(0.0825)

Soil quality dummy

  

0.0169

   

(0.0252)

PSNP dummy

  

0.0278

   

(0.0660)

Crop rotation dummy

  

0.116**

   

(0.0502)

Extension dummy

  

0.00340

   

(0.0309)

Advisory dummy

  

0.0462

   

(0.0356)

Household FE

Yes

Yes

Yes

Year FE

Yes

Yes

Yes

Crop FE

Yes

Yes

Yes

Observations

5,415

5,415

5,415

R-squared

0.624

0.625

0.626

Number of clusters

1,739

1,739

1,739

  1. The dependent variable is crop-cut harvest volume measured in quintal. The standard errors in parenthesis are clustered at the household level. The current nutritional status indicator is the Food Consumption Score (FCS) and its square. All variables, except dummy controls, are in natural logarithmic form so that the coefficients can be interpreted as elasticity. ***p < 0.01, **p < 0.05, *p < 0.1