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. 2012 Sep 18;14(5):e119. doi: 10.2196/jmir.2183

Table 2.

Recording errors in pen-and-paper questionnaires.

Type of error Immediately after interview Before data entry Total
No. of
questionnaires
with error(s) 		No. of
errors 		No. of
questionnaires
with error(s) 		No. of
errors 		No. of
questionnaires
with error(s) 		No. of
errors
1 Missing confirmation of default option 49 156 0 0 49 156
2 Missing survey date 1 1 0 0 1 1
3 Wrong response for checking question 2 2 0 0 2 2
4 Two options circled 2 2 0 0 2 2
5 Wrong option chosen 3 4 0 0 3 4
6 Missed question 2 2 1 4 3 6
7 More than one option circled in single-choice question 1 1 0 0 1 1
8 Wrong ID number for interviewer 0 0 7 8 7 8
9 Wrong date 0 0 1 1 1 1
10 Wrong setting for database 0 0 11 11 11 11
Total 51a 168 20a 24 55a 192

a Total numbers of questionnaires with error(s). A questionnaire could have more than one error, but was counted as one copy. Therefore, the total number of questionnaires does not equal the total number of all types of errors.