title: Relation between birth weight at term and systolic blood pressure in adolescence.
abstract: OBJECTIVE
  To examine whether birth weight is related to systolic blood pressure during adolescence.
  
  
  METHODS
  Retrospective (comparative) cohort study. The observers who traced and studied the subjects were unaware of their case-control status.
  
  
  METHODS
  330 subjects were born in Cardiff in 1975-7. Cases who were low birth weight at term (< 2500 g) were matched with controls of normal birth weight (3000-3800 g) at term.
  
  
  METHODS
  Systolic blood pressure measured by random zero sphygmomanometry in the subject's right arm with the subject supine, corrected for size and age.
  
  
  RESULTS
  The mean age at examination was 15.7 years. The mean systolic blood pressure of the cases was 105.8 mm Hg and of the controls 107.5 mm Hg. The corrected difference (95% confidence interval) in systolic blood pressure between the cases and controls was 1 mm Hg (-3 to +1 mm Hg; two tailed probability 0.33).
  
  
  CONCLUSIONS
  Systolic blood pressure in adolescents of low birth weight is not significantly different from that of adolescents of normal birth weights.
authors.affiliation: University of Wales, College of Medicine, Heath Park, Cardiff.
authors.forename: J W
authors.initials: JW
authors.lastname: Matthes
authors.forename: P A
authors.initials: PA
authors.lastname: Lewis
authors.forename: D P
authors.initials: DP
authors.lastname: Davies
authors.forename: J A
authors.initials: JA
authors.lastname: Bethel
mesh_terms: D000293:Adolescent; D000367:Age Factors; D001794:Blood Pressure / Q000502:physiology*; D001827:Body Height / Q000502:physiology; D016022:Case-Control Studies; D015331:Cohort Studies; D005260:Female; D006801:Humans; D007230:Infant, Low Birth Weight / Q000502:physiology*; D007231:Infant, Newborn; D008297:Male; D012189:Retrospective Studies; D013599:Systole / Q000502:physiology; D014852:Wales / Q000453:epidemiology