---
"title": "Methodology"
"description": "The 2012 Health Survey, sponsored by the Pew Research Center’s Internet & American Life Project and the California HealthCare Foundation, obtained telephone interviews with a nationally representative sample of 3,014 adults living in the United States. Telephone interviews were conducted by landline (1,808) and cell phone (1,206, including 624 without a landline phone). The survey […]"
"date": "2013-01-15"
"authors":
  -
    "name": "Susannah Fox"
    "job_title": "Former Researcher"
    "link": "https://alpha.pewresearch.org/pewresearch-org/staff/susannah-fox/"
  -
    "name": "Maeve Duggan"
    "job_title": "Former Research Associate"
    "link": "https://alpha.pewresearch.org/pewresearch-org/staff/maeve-duggan/"
"url": "https://alpha.pewresearch.org/pewresearch-org/internet/2013/01/15/methodology-7-7/"
---

# Methodology

The 2012 Health Survey, sponsored by the Pew Research Center’s Internet & American Life Project and the California HealthCare Foundation, obtained telephone interviews with a nationally representative sample of 3,014 adults living in the United States. Telephone interviews were conducted by landline (1,808) and cell phone (1,206, including 624 without a landline phone). The survey was conducted by Princeton Survey Research Associates International. Interviews were done in English and Spanish by Princeton Data Source from August 7 to September 6, 2012. Statistical results are weighted to correct known demographic discrepancies. The margin of sampling error for the complete set of weighted data is ±2.4 percentage points.

A complete explanation of the survey design and data collection procedures can be found in the PDF of the [topline ](https://alpha.pewresearch.org/pewresearch-org/wp-content/uploads/sites/20/2013/01/Pew-Internet-Health-Online-topline.pdf)or of the [report](https://alpha.pewresearch.org/pewresearch-org/wp-content/uploads/sites/20/2013/01/PIP_HealthOnline.pdf).