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Table 6 IV and GLS regression results - full model

From: Midday meals as an early childhood nutrition intervention: evidence from plantation communities in Sri Lanka

  

IV and GLS – random effects regression

WAZ

HAZ

WHZ

IV

GLS

IV

GLS

IV

GLS

Treatment var

Trt

 

0.031** (0.006)

0.078** (0.012)

0.047** (0.012)

0.053** (0.014)

0.014 (0.018)

-0.006 (0.019)

Instrumented var

WAZi,t-1/ HAZi,t-1/ WHZi,t-1

 

1.012** (0.025)

0.731** (0.009)

0.913** (0.008)

0.904** (0.011)

0.819** (0.023)

0.814** (0.011)

Child-level

Age

 

0.006** (0.002)

-0.005** (0.001)

0.007** (0.002)

0.007** (0.002)

-0.008* (0.003)

-0.008* (0.003)

Age_sq

 

-0.0001** (0.00002)

0.0001** (0.00002)

-0.0001** (0.00003)

-0.0001* (0.00003)

0.0001+ (0.00004)

0.0001+ (0.00004)

Gender

Male

0.016** (0.004)

-0.012 (0.011)

-0.004 (0.01)

-0.005 (0.011)

-0.007 (0.014)

-0.009 (0.015)

firstzweight

 

-0.043* (0.017)

0.14** (0.009)

0.037** (0.006)

0.038** (0.006)

0.082** (0.013)

0.076** (0.009)

firstzheight

    

0.006 (0.01)

 

0.004 (0.009)

pcare

 

0.07** (0.019)

0.077* (0.033)

0.074* (0.036)

0.093* (0.043)

-0.080 (0.059)

-0.048 (0.059)

zbirthweight

  

0.02** (0.005)

-0.004 (0.005)

-0.004 (0.005)

 

0.020* (0.008)

Ethnicity

Sinhalese

0.004 (0.007)

0.012 (0.022)

0.019 (0.018)

0.019 (0.019)

-0.070** (0.025)

-0.063** (0.024)

CDC-level

CDC_category

New

0.004 (0.006)

-0.002 (0.017)

-0.002 (0.015)

-0.004 (0.016)

-0.040+ (0.022)

-0.052* (0.022)

Upgraded

0.004 (0.006)

0.0005 (0.015)

0.008 (0.016)

0.011 (0.017)

-0.028 (0.021)

-0.034 (0.021)

 _cons

 

-0.111 (0.091)

-0.348** (0.096)

-0.577** (0.081)

-0.626** (0.089)

0.363** (0.130)

0.342** (0.133)

 Observations

 

17214

17214

10309

10309

7783

7783

σu

 

0.035

0.094

0.108

0.153

0

0.098

σe

 

0.309

0.306

0.237

0.224

1.222

0.460

ρ

 

0.012

0.086

0.171

0.318

0

0.044

Kleibergen-Paap LM Stat

 

23.80**

 

123.44**

 

61.96**

 

Cragg-Donald Wald F Stat

 

82.13

 

1262.49

 

330.80

 

Sargan-Hansen Test

 

0.613

 

0.138

 

9.328**

 
  1. Robust standard errors in parenthesis, **p<0.01, *p<0.05, + p<0.1
  2. K-P LM test [Null: matrix of reduced form coefficients has rank=K1-1 (underidentification)], C-D Wald F Test [Null: Equation is weakly identified], S-H Test [Null: Overidentification restriction is satisfied]. Birth-year fixed effects excluded from table