Table 1.

Census Response Rate Analysis

Characteristic	Population	Responses	Rate (%)	Test Value F	P
Overall	4,546	632	13.9	—	—
Geographic location				7.166	≤ .001
Northeast	998	118	11.8
North central	996	180	18.1
South	1,586	221	13.9
West	965	112	11.6
Metropolitan status				2.319	≤ .128
Nonmetropolitan	497	79	15.9
Metropolitan	3,880	520	13.4
Practice size, No. of oncology physicians				16.228	≤ .001
One	1,136	108	9.5
Two to five	2,175	256	11.8
≥ Six	1,114	191	17.1