# **Table 1: Basic Statistics and Variables Definition**

||||**Urban**|||**Rural**||
|---|---|---|---|---|---|---|---|
|**Variable**|**Definition**|**N**|**Mean**<br>**S**|**td. Dev.**|**N**|**Mean**<br>**S**|**td. Dev.**|
|North|=1 for Northern States<sup>a</sup>|20407|0.183|0.386|5307|0.151|0.358|
|Center|=1 for Center States<sup>b</sup>|20407|0.552|0.497|5307|0.513|0.500|
|South|=1 for Southern States<sup>c</sup>|20407|0.265|0.442|5307|0.336|0.472|
|Vehicles|Number of household vehicles|20407|0.653|0.881|5307|0.436|0.733|
|Appliances|Number of household appliances|20407|6.977|4.042|5307|4.117|2.613|
|Refrigerator|=1 if the house has refrigerator|20407|0.879|0.326|5307|0.665|0.472|
|Stove|<br>=1 if the house has a stove|20407|0.939|0.240|5307|0.651|0.477|
|Washing machine|=1 if the house has a washing machine|20407|0.693|0.461|5307|0.457|0.498|
|Fan|=1 if the house has a fan|20407|0.524|0.499|5307|0.361|0.480|
|Air conditioning|=1 if the house has air conditioning|20407|0.135|0.341|5307|0.043|0.202|
|Heating|=1 if the house has heating|20407|0.018|0.133|5307|0.005|0.067|
|Owners of housing|=1 if the house is owned (even if they are still paying for it)|20407|0.677|0.468|5307|0.860|0.347|
|<br>Log (dormitories)|<br>Log of the number of rooms used for sleeping|20407|0.628|0.459|5307|0.517|0.457|
|Housing quality|This is the sum of three dummy variables: floor, ceiling and wall quality<sup>d</sup>|20407|2.635|0.731|5307|1.976|0.954|
|Employment type|=1 if the household head is self-employed or an employer|20407|0.193|0.394|5307|0.386|0.487|
|Male|=1 if the household head is male|20407|0.736|0.441|5307|0.822|0.383|
|Formal|=1 if the household head has access to social security for his job|20407|0.321|0.467|5307|0.116|0.320|
|Indigenous language|=1 if the household head speaks an indigenous language|20407|0.082|0.275|5307|0.247|0.431|
|<br>Log(Household size)|<br>Log of the number of household members|20407|1.203|0.552|5307|1.326|0.552|
|Skilled|=1 if the household head has 12 or more years of schooling|20407|0.286|0.452|5307|0.062|0.241|
|Decile 1-10|=1 for the correspondent decile|20407|0.099|0.299|5307|0.099|0.298|
|**Dependant variable for OLS**||||||||
|Log(LPG)|Log of the monthly LPG household consumption|11279|3.398|0.480|1980|3.307|0.447|
|Log (electricity)|Log of the monthly electricity household consumption|18892|3.048|0.905|4979|2.493|0.878|
|Log(gasoline)|Log of the monthly gasoline household consumption|8477|4.313|0.836|1513|3.897|0.870|
|Log(natural gas)|Log of the monthly natural gas household consumption<sup>e</sup>|1008|3.796|0.669|6|3.816|0.923|
|Log(energy)|Log of the monthly energy household consumption|20407|3.997|1.123|5307|3.166|1.251|
|**Dependant variable for Tobit**||||||||
|<br>LGP|Monthly LPG household consumption|20407|18.651|22.415|5307|11.207|16.828|
|Electricity|<br>Monthly electricity household consumption|20407|30.732|47.926|5307|17.257|24.091|
|Gasoline|Monthly gasoline household consumption|20407|42.910|78.697|5307|20.163|48.407|
|Natural Gas|Monthly natural gas household consumption<sup>e</sup>|7683|7.284|24.446|681|0.509|6.042|
|Energy|Monthly energyhousehold consumption|20407|95.036|112.598|5307|48.693|67.458|

a Northern States: Baja California, Baja California Sur, Sinaloa, Sonora, Chihuahua, Coahuila, Durango, Nuevo Leon, Tamaulipas b Center States: Aguascalientes, Colima, Distrito Federal, Guanajuato, Guerrero, Hidalgo, Jalisco, Mexico, Michoacan, Morelos, Nayarit, Puebla, Queretaro, San Luis Potosi, Tlaxcala, Veracruz, Zacatecas c Southern States: Oaxaca, Chiapas, Tabasco, Campeche, Yucatan, Quintana Roo d Floor quality =1 if the floor is made of concrete, wood, tile, or other coating; wall quality =1 if the wall is made of partition, brick, block, stone, or concrete; ceiling quality =1 if the roof is made of concrete slabs or joists with a vault e Restricted to municipalities with natural gas distribution infrastructure 10