From: Teaching evolution in U.S. public middle schools: results of the first national survey
 | Number | Percent |
---|---|---|
11 Complete | 1427 | 28.5% |
12 Partial | 72 | 1.4% |
21 Refused—eligible | 3 | 0.1% |
22 Survey returned blank—eligibility unknown | 12 | 0.2% |
23 Web survey started—did not complete Q1 | 59 | 1.2% |
31 Not returned—eligibility unknown | 2817 | 56.2% |
32 Not returned—confirmed eligible | 420 | 8.4% |
33 Undeliverable—eligibility unknown | 33 | 0.7% |
41 Self report ineligible | 14 | 0.3% |
42 Not eligible—from audit | 157 | 3.1% |
Total | 5014 | 100.0% |