---
title: "Methodology"
description: "The PSRAI January 2013 Omnibus Week 1 obtained telephone interviews with a nationally representative sample of 1,003 adults living in the continental United States. Telephone interviews were conducted by landline (501) and cell phone (502, including 241 without a landline phone). The survey was conducted by Princeton Survey Research Associates International (PSRAI). Interviews were done […]"
date: "2013-01-31"
authors:
  - name: "Aaron Smith"
    job_title: "Director, Data Labs"
    link: "https://www.pewresearch.org/staff/aaron-smith/"
url: "https://www.pewresearch.org/internet/2013/01/31/methodology-5-7/"
---

# Methodology

The PSRAI January 2013 Omnibus Week 1 obtained telephone interviews with a nationally representative sample of 1,003 adults living in the continental United States. Telephone interviews were conducted by landline (501) and cell phone (502, including 241 without a landline phone). The survey was conducted by Princeton Survey Research Associates International (PSRAI). Interviews were done in English by Princeton Data Source from January 3 to 6, 2013. Statistical results are weighted to correct known demographic discrepancies. The margin of sampling error for the complete set of weighted data is ± 3.6 percentage points.