How is HMO penetration defined?
The sample for the CTS Physician Survey is concentrated in 60 sites across the U.S., and so the level of HMO penetration for each physician is simply the level for the site in which the physician practices. Estimates from the CTS Household Survey were used to measure the HMO penetration rate in each site. The level of HMO penetration was calculated as the percentage of insured individuals who report being enrolled in an HMO. The site was considered to have “low” penetration if that rate was less than 40%, “medium” penetration if 40% to 55%, and “high” penetration if greater than 55%. Click here to find the appropriate technical documentation for the HMO penetration categories in each round.
The sample for the CTS Physician Survey is concentrated in 60 sites across the U.S., and so the level of HMO penetration for each physician is simply the level for the site in which the physician practices. Estimates from the CTS Household Survey were used to measure the HMO penetration rate in each site. The level of HMO penetration was calculated as the percentage of insured individuals who report being enrolled in an HMO. The site was considered to have “low” penetration if that rate was less than 40%, “medium” penetration if 40% to 55%, and “high” penetration if greater than 55%. Click here to find the appropriate technical documentation for the HMO penetration categories in each round. Disaggregating by HMO penetration is not an option for the 2008 Health Tracking Physician Survey data because the site-based sample design was dropped for this survey.
