---
title: "Methods"
description: "The 2012 Health Survey, sponsored by the Pew Research Center 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 […]"
date: "2013-06-20"
authors:
  - name: "Susannah Fox"
    job_title: "Former Researcher"
    link: "https://www.pewresearch.org/staff/susannah-fox/"
  - name: "Maeve Duggan"
    job_title: "Former Research Associate"
    link: "https://www.pewresearch.org/staff/maeve-duggan/"
  - name: "Kristen Purcell"
    job_title: "Guest Contributor"
url: "https://www.pewresearch.org/internet/2013/06/20/methods-18/"
---

# Methods

The 2012 Health Survey, sponsored by the Pew Research Center 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.

Details about design and data collection procedures, as well as survey results, can be found at:

[https://www.pewresearch.org/internet/Shared-Content/Data-Sets/2012/September-2012--Health-Tracking-(prelim).aspx](https://www.pewresearch.org/internet/Shared-Content/Data-Sets/2012/September-2012--Health-Tracking-(prelim).aspx)