Survey Text
1995
No questionnaire text is available for this sample.
No questionnaire text is available for this sample.
No questionnaire text is available for this sample.
1994
No questionnaire text is available for this sample.
No questionnaire text is available for this sample.
No questionnaire text is available for this sample.
1981
Survey form
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17a. Has -- ever crawled when left lying on -- stomach?
1[] Y
2[] N
9[] DK