Table 3 Double-hurdle estimation factors affecting adoption of drought-tolerant teff (Craggit model)

Mean farm level pop pressure at community level

0.091

(0.088)

− 0.179*

(0.104)

0.080

(0.108)

− 0.061

(0.107)

0.102

(0.122)

− 0.061

(0.118)

Deviation of farm-level pop pressure from community mean

− 0.012

(0.047)

− 0.053

(0.078)

0.003

(0.060)

0.033

(0.060)

0.008

(0.065)

0.035

(0.052)

Mean rainfall 2003–2014 (cm)

− 0.001

(0.007)

− 0.004

(0.007)

− 0.002

(0.007)

− 0.004

(0.007)

− 0.001

(0.007)

− 0.009

(0.006)

St. Dev. rainfall 2003–2014 (cm)

0.015

(0.112)

− 0.027

(0.096)

0.055

(0.116)

0.042

(0.116)

0.028

(0.117)

0.069

(0.102)

One-year lagged positive deviation rainfall (cm)

0.029***

(0.007)

0.005

(0.006)

0.031***

(0.007)

0.002

(0.005)

0.030***

(0.007)

0.008*

(0.005)

One-year lagged negative deviation rainfall (cm)

− 0.017

(0.025)

− 0.004

(0.019)

− 0.021

(0.025)

0.000

(0.021)

− 0.016

(0.025)

0.016

(0.022)

Two-year lagged positive deviation rainfall (cm)

0.014

(0.030)

0.007

(0.034)

0.004

(0.031)

− 0.008

(0.026)

− 0.002

(0.033)

0.018

(0.027)

Two-year lagged negative deviation rainfall (cm)

− 0.008

(0.014)

− 0.018

(0.011)

− 0.008

(0.015)

− 0.014

(0.010)

− 0.010

(0.015)

− 0.018

(0.011)

Distance to market (h)

0.052

(0.062)

0.158***

(0.044)

0.045

(0.063)

0.123***

(0.044)

0.060

(0.061)

0.109***

(0.038)

Year 2010 dummy

− 0.616*

(0.317)

− 0.157

(0.208)

0.901***

(0.321)

− 0.049

(0.225)

− 0.680**

(0.331)

0.015

(0.198)

Year 2015 dummy

− 0.701*

(0.425)

− 0.373

(0.342)

− 0.912**

(0.425)

− 0.167

(0.308)

− 0.843**

(0.427)

− 0.109

(0.327)

Constant

− 1.291*

(0.710)

1.693***

(0.548)

2.810***

(1.061)

− 0.169

(1.626)

− 2.126*

(1.217)

− 1.910

(1.419)

Sigma constant

0.458***

(0.042)

0.394***

(0.029)

0.359***

(0.025)

Chi²

57.21

92.38

130.10

Log-likelihood

− 333.77

− 309.32

− 294.78

Prob > Chi²

0.0000

0.0000

0.0000

995

115

995

115

995

115