Variable Description

Name
pub111
Label
a4a - how old was child when she had her first period
Dataset
Value Label Frequency % of valid % of all
-9999 Consent withdrawn 0
0.00%
-10 Child is male 2,951
0.00%
-9 Error check 0
0.00%
-8 Text response 0
0.00%
-7 Missing due to printing error 0
0.00%
-2 Not started periods 3,276
0.00%
-1 Missing 24
0.00%
Valid Invalid Min Max Mean
1 6251 8 8 8

Representation

Type
Code List
Selection Style
SelectOne
Codes
Aggregation Method
Unspecified
Temporal
False
Geographic
False

Source Questions

A4 a

9 questions before...
If no, please go to A10 on page 4

How old was your daughter when she had her first period? ... years old

Age

When was her first period ?

Generic date
32 questions after...
View the complete instrument

Lineage

  • ALSPAC Growing and Changing 1 Dataset - pub111
    a4a - how old was child when she had her first period
    • How old was your daughter when she had her first period? ... years old

Concordance