Table 1

Cleaning physician list

N%
Physician list received from CT-DPH18 642
Duplicates in the list2056
Triplicates in the list100
Quadruplicates in the list12
Quintuplicates in the list12
Unduplicated Physician list16 462
Responses to the Physician postcard
 No response12 35875.1
 Postcard returned because of invalid address9996.1
 Postcard returned completed310518.9
Physicians excluded because of death, retirement, etc
 Died440.3
 Retired2331.4
 No Longer practises in CT582835.4
 Postcard returned: unknown if physician practises in CT300.2
 Target population after exclusions10 327
 Adjusted postcard response rate based on target population30.1
Physicians receiving full survey
 Refused to participate in the survey91
 Postcard returned; no preferred survey method specified; unable to contact physician to get a preferred method9
 Physician practices in CT; survey sent2159
Response rate for survey89841.6