Age of menarche in contemporary British teenagers: survey of girls born between 1982 and 1986BMJ 2001; 322 doi: https://doi.org/10.1136/bmj.322.7294.1095 (Published 05 May 2001) Cite this as: BMJ 2001;322:1095
Cumulative percentage of girls reporting menarche with increasing age.
Participants with imputed month of menarche omitted from plot
Reference and region No of participants Date of birth Median age of menarche (95% CI) Tanner,4 London 7000 1950-7 13.0 (12.9 to 13.1) Roberts et al,w1 north east England 1307 1954-9 13.3 (13.2 to 13.4) Billewicz et al,w2 north east England 699 1962 13.4 (13.3 to 13.5) Roberts et al,w3 north west England 1274 1960-5 13.3 (13.2 to 13.4) Current study Region: Southern England 575 1982-6 13.1 (12.8 to 13.2) North west England 358 12.9 (12.7 to 13.2) South Wales 233 12.9 (12.6 to 13.2) Ethnicity: European 1068 13.0 (12.8 to 13.2) South Asian 79 13.1 (12.5 to 13.3) Other* 19 Parent's occupation: Non-manual 448 12.9 (12.7 to 13.2) Manual 375 13.1 (12.8 to 13.2) Unclassified 343 13.1 (12.7 to 13.2) Overall 1166 12.9 (12.8 to 13.1)
*Too few participants to determine menarcheal age reliably.
W1 Roberts DF, Danskin MJ, Chinn S. Menarcheal age in Northumberland. Acta Paediatrica Scand 1975;64:845-52.
W2 Billewicz WZ, Fellowes HM, Thomson AM. Menarche in Newcastle-upon-Tyne girls. Ann Hum Biol 1981;8:313-20.
W3 Roberts DF, Wood W, Chinn S. Menarcheal age in Cumbria. Ann Hum Biol 1986;13:161-70.
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