( 24 ...)Flu Vaccine Used Last Winter Seems to Have Been Less Effective Than,Vaccines Used in Previous Years,Health

24 15 30-39 19 21 40-49 16 22 50-65 10 43 65+ 9 73 Race/Ethnicity White 14 36 African-American 15 33 Hispanic 24 32

Methodology

This Harris Poll(R) was conducted online within the United States between April 10 and 16, 2007 among a nationwide cross section of 2,563 (aged 18 and over) of whom 899 got a flu shot before the winter of 2006/2007. Figures for age, sex, race/ethnicity, education, region and household income were weighted where necessary to bring them into line with their actual proportions in the population. Propensity score weighting was also used to adjust for respondents' propensity to be online.

All surveys are subject to several sources of error. These include: sampling error (because only a sample of a population is interviewed); measurement error due to question wording and/or question order, deliberately or unintentionally inaccurate responses, nonresponse (including refusals), interviewer effects (when live interviewers are used) and weighting.

With one exception (sampling error) the magnitude of the errors that result cannot be estimated. There is, therefore, no way to calculate a finite "margin of error" for any survey and the use of these words should be avoided.

With pure probability samples, with 100 percent response rates, it is possible to calculate the probability that the sampling error (but not other sources of error) is not greater than some number. With a pure probability sample of 2,563 adults one could say with a ninety-five percent pro
'"/>

Page: 1 2 3 4 5 6
Related medicine technology :

1. BioSante Pharmaceuticals Announces New Findings for Potential Bird Flu Vaccine
2. DOR BioPharma Announces Issuance of European Patent for Its Oral Multivalent Botulinum Toxin Vaccine BT-VACC
3. From Clinical Cancer Research: Rethinking Therapeutic Cancer Vaccine Trials
4. DOR BioPharma Announces Publication Describing Results of Its Multivalent Botulinum Toxin Vaccine BT-VACC
5. Vaccine Can Prevent Cervical Cancer and Precancerous Lesions
6. Largest Cervical Cancer Vaccine Efficacy Trial Shows Cervarix Provides Excellent Protection Against Lesions Caused by Most Common Cancer-Causing Virus Types
7. Based on Up to 6 Years of Follow-Up, Biovest Announces Favorable Interim Blinded Data for Fast-Tracked Pivotal Phase 3 Clinical Trial of BiovaxID Anti-Cancer Vaccine for Non-Hodgkins Lymphoma
8. HepaLifes PBS-1 Cells for Influenza Vaccine Production Prove Superior at International Conference
9. New Flu Vaccine from PepTcell Could Provide Immunity Against All Strains of Influenza Virus
10. Hypertension Vaccine CYT006-AngQb Achieves Strong Blood Pressure Reduction During Important Early Morning Period When Most Adverse Cardiovascular Events Occur
11. New Flu Vaccine From PepTcell Could Provide Immunity Against All Strains of Influenza Virus