Figure showing age at menarche

Longer version of table
 

    Cumulative percentage of girls reporting menarche with increasing age.
    Participants with imputed month of menarche omitted from plot


 

Age of menarche in contemporary British teenagers and those born between 1950 and 1965

    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.