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Member Health Survey

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2008 Kaiser Permanente Adult Member Health Survey Report for the Northern California Region Membership

The Kaiser Permanente Division of Research has prepared reports profiling the adult Health Plan membership aged 20 and over in the Northern California region. The statistics in this report are based on respondent data that have been weighted to the age and gender distribution of the medical center service population (MCSP) from which the respondents were drawn. Hence, the weighted data takes into account differences in the sizes of the MCSPs in the region. Larger MCSPs have greater influence on the final regional statistics than smaller MCSPs.

2008 Northern California Region Report


To create a health profile of our 2.3 million adult members in Northern California, we mailed surveys to stratified random samples of about 42,000 adult members in spring 2008. The overall response rate was 41 percent. However, this varied by age group (25 percent of ages 20-44, 42 percent of ages 45-64, and 69 percent of ages 65 and over. 

Statistics are based on self-reported data weighted to reflect the age, gender, and geographic composition of the adult membership at the time the survey was conducted. Tests for statistically significant differences were conducted using SAS® procedures for analyzing complex survey data. All differences indicated in the text are statistically significant at a minimum of P < 0.05. 

Contact us

Check here for announcements of new reports that have been posted to the website. For more information about timing and topics or to make special requests for statistics based on the 2008 survey, contact Nancy Gordon, Member Health Survey director, at: