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telephone
internet
mail
personal interviewing

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In-house RDD telephone sampling programs (Survey Sampling, Inc.)
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Telephone sample options include city, state, regional and national.
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Telephone samples can be provided that have an increased incidence
of certain census attributes, i.e. income, housing, race, age.
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By selecting from multiple sample source partners, SPA has the critical mass necessary to ensure random selection across the widest sampling frame in the industry today. A sophisticated two-tier, real-time screening process allows the system to eliminate self-selection by randomly assigning respondents to studies.
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SPA can help you field your tracking study with maximum efficiency, without sacrificing the complexity and sophistication that professional researchers expect.
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Mail
samples can be provided for random and specialized sample criteria.
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National,
regional or localized.
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Consumer
or business.
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Field
locations can be selected based upon desired geographic areas or demographic
criteria.
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Nationwide field service partners.
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