# **Table A.23. The list of selected variables in Random Forest with the variable importance scores for imputation from NPS 2020/21 to TA 1 using 2020/21 Poverty Line**

||**Model**<br>**M1**|**Model**<br>**M2**|**Model**<br>**M3**|**Model**<br>**M4**|**Model**<br>**M5**|**Model**<br>**M6**|**Model**<br>**M7**|**Model**<br>**M8**|**Model**<br>**M9**|
|---|---|---|---|---|---|---|---|---|---|
|Household size|0.082|0.226|0.096|0.100|0.228|0.119|0.217|0.274|0.225|
|Age of HH Head|0.030|0.098|0.034|0.046|0.097|0.035|0.089|0.126|0.096|
|HH Head is Female|0.026|0.068|0.027|0.042|0.064|0.030|0.060|0.083|0.072|
|Head has primary education|0.036|0.072|0.028|0.040|0.071|0.029|0.064|0.091|0.097|
|Head has secondary ordinary education|0.166|0.117|0.029|0.040|0.113|0.045|0.104|0.144|0.242|
|<br>Head has secondary advanced education and higher|0.612|0.297|0.084|0.067|0.262|0.090|0.232|0.361|1.000|
|Share of hh_membr_014|0.053|0.133|0.049|0.056|0.135|0.052|0.126|0.170|0.152|
|Share of hh_membr_1524|0.031|0.090|0.031|0.047|0.090|0.035|0.082|0.114|0.093|
|Share of hh_membr_60older|0.034|0.095|0.031|0.054|0.095|0.038|0.085|0.121|0.099|
|HH Head did any wage work during the last 7 days|0.027|0.064|0.024|0.043|0.062|0.028|0.057|0.081|0.072|
|<br>HH Head was self-employed (non-farm) during the last 7 days|0.048|0.091|0.034|0.052|0.085|0.041|0.080|0.107|0.110|
|urban==Urban|1.000|0.367|0.187|0.052|0.439|0.178|0.366|0.409|0.619|
|Household owns a motor vehicle||0.223|0.093|0.046|0.204|0.097|0.182|0.306||
|Household owns a bicycle||0.064|0.027|0.043|0.064|0.028|0.056|0.082||
|Household owns a mobile phone||0.097|0.032|0.049|0.094|0.047|0.087|0.120||
|<br>Household owns a video/dvd||0.142|0.041|0.041|0.149|0.047|0.120|0.169||
|Household owns a television||1.000|0.937|0.506|1.000|1.000|1.000|1.000||
|Household owns a computer||0.559|0.205|0.460|0.493|0.288|0.480|0.727||
|Household owns a refrigerator/freezer||0.505|0.210|0.051|0.481|0.259|0.513|0.592||
|Household owns an air c/fans||0.154|0.066|0.032|0.174|0.045|0.131|0.189||
|Household owns a radio||0.080|0.029|0.041|0.076|0.036|0.070|0.100||
|Household owns a mosquito net||0.068|0.025|0.048|0.065|0.031|0.061|0.086||
|Log of per capita residential area||0.188|0.092|0.070|0.210|0.098|0.178|0.253||
|Concrete/Metal sheets/Tiles||0.096|0.035|0.056|0.098|0.038|0.086|0.124||
|Burnt bricks/Concrete||0.158|0.059|0.048|0.173|0.054|0.143|0.187||
|Floor is improved||0.571|0.383|0.064|0.620|0.364|0.573|0.607||
|<br>Piped water/Truck||0.138|0.039|0.046|0.152|0.048|0.123|0.163||
|Flush/VIP||0.709|1.000|0.573|0.863|0.553|0.649|0.723||
|Log of real per adult equivalent food consumption, annual, 2010/11 prices|||0.663|||||||
|<br>Log of real per adult equivalent non-food consumption, annual, 2010/11 prices||||1.000||||||
|<br>Log (real per adult equivalent furnishings & household expenses cons, annual, 2010/11 prices|||||0.248|||||
|Log of real per adult equivalent health expenditure, annual, 2010/11 prices||||||0.087||||
|Log of real per adult equivalent education expenditure, annual, 2010/11 prices|||||||0.164|||
|Log of real per adult equivalent electricity & kerosene & water cons, annual, 2010/11 prices||||||||0.455|0.333|
|**_Predictive accuracy_**||||||||||
|<br>RMSE for testing sub-sample|0.60|0.50|0.28|0.34|0.48|0.47|0.49|0.48|0.53|
|<br>Corresponding minimum number of variables|4|5|13|23|5|10|5|5|4|
|<br>RMSE<br>Note: The values are scaled proportional to the largest value in the set. The model is trained using<br>sample) and 50% used for validation (testing sub-sample).|0.59<br>Tanzania|0.48<br>2020/21 rou|0.24<br>nd. The trai|0.34<br>ning data is|0.46<br>split into t|0.45<br>wo subsets:|0.47<br>50% used f|0.44<br>or training (|0.49<br>training sub-|

Note: The values are scaled proportional to the largest value in the set. The model is trained using Tanzania 2020/21 round. The training data is split into two subsets: 50% used for training (training subsample) and 50% used for validation (testing sub-sample).

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