According to the official poverty measuring methodology, the access to basic household services indicator must consider if the households were timber and coal are used as fuel to cook have a chimney, which allows the proper use of these materials without compromising the health of its inhabitants.
This variable is included in the poverty estimates 2010-2012, as well as in the 2010 estimates published two years ago. However, the Socioeconomic Conditions Module of the National Survey of Income and Expenditure at Households (MCS-ENIGH) of 2008 did not gather the information corresponding to the existence of chimneys; therefore, in the poverty measurement of 2008 it was not possible to consider such variable in the estimate of the indicator of deprivation due to access to basic household services. .
The MCS-ENIGH of 2010 and 2012 added such variable, so, the poverty estimates of 2010 and 2012 did consider it in the poverty measurement. Even for 2010 and 2012, it is also reported the poverty estimate without considering the existence of a chimney for the use of timber and coal in those years.
Due to the above, in order to strictly compare the evolution of poverty between 2008 and 2012, the fuel use variable must not be considered in that period. In this section we will make this poverty comparison without considering this variable for the period mentioned. The official poverty data for 2010 and 2012 that consider the fuel indicator, can be consulted here.