A Parsimonious Method to Sample Households

Many epidemiological surveys are based on sampling dwellings. Traditionally this is done by arduous traditional survey methods, but an alternative method has been evaluated based on satellite images available through Google Earth. These images can be exported into geographical and then statistical software.[1] Ninety-five percent of structures identified as dwellings were indeed homes and the sample contained the expected demographic profile for Lilongwe, Malawi where the survey was conducted.

— Richard Lilford, CLAHRC WM Director

Reference:

  1. Escamilla V, Emch M, Dandalo L, Miller WC, Martinson F, Hoffman I. Sampling at community level by using satellite imagery and geographical analysis. Bull World Health Organ. 2014; 92: 690-4.
Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s