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Variable

UK Data Service variable record for:

1970 British Cohort Study: Twenty-Nine-Year Follow-up, 1999-2000

Variable Details

Variablepl1age
LabelAge CM first problems with periods
Question text How old were you when you first had a problem with your periods?
Responses
2 1
8 1
9 6
10 7
11 52
12 59
13 121
14 112
15 93
16 110
17 60
18 53
19 35
20 37
21 33
22 26
23 33
24 38
25 47
26 39
27 53
28 69
29 40
98 Dont know 0
99 Not answered 2
Sysmiss 10134
DisclaimerPlease note that these frequencies are not weighted.
Location1970 British Cohort Study: Twenty-Nine-Year Follow-up, 1999-2000
Interviewer InstructionsENTER AGE.
UniverseLocation of units of observation: National;Population: The original BCS70 sample included all children born in one week in 1970 in the United Kingdom, but waves beyond the initial birth survey have generally only included Great Britain.
SamplingNo sampling (total universe)
Study TypeLongitudinal/panel/cohort
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We are supported by the University of Essex, University of Manchester, Jisc, UCL and University of Edinburgh. We are funded by UKRI through the Economic and Social Research Council.