PowerPoint Presentation · ssrs . ssrs . ssrs . 12 10 ssrs . CBS NHIS OMNI 12 10 ssrs . 2009 20110 20111 20112 2013 20114 CBS PE-WI OMNI NHIS 2009 20á14 ssrs . O 2008 PCT of Interviews

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Initial ask was of ABC, CBS, Gallup, GfK, ICF, Ipsos, Nielsen, NORC, ORC, Pew, RAND, RTI, SRBI, TNS, Westat

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Sample NameMode of Data

Collection

Cumulative Sample

Size

Response Rate

Formula

The BRFSS Telephone 6,118,156 BRFSS CASRO

CBS Polls Telephone 61,112 RR1

ABC Polls Telephone 130,099 RR3

Pew Polls Telephone 98,535 RR3

The GSS In-Person 32.749 RR3

The NHIS In-Person 1,244,070 RR3

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Effect Estimate p-value

Intercept 2.295 0.013

Spline Effect 1: Linear Change in MAB (unweighted) 0.086 0.009

Spline Effect 2: Linear Change in MAB (unweighted) after 2009 -0.238 0.002

Telephone Surveys 1.241 0.129

Spline Effect 1 x Telephone Surveys 0.077 0.039

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DON’T WORRY. THE POUND HAS DEVALUED, SO YOU’VE ACTUALLY LOST WEIGHT.

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