observed 12 month height velocity at the mean value for the population-'that is, 6 27 cm a year on standard charts-the 95% confidence interval for his true velocity ranges from the 25th centile to the 75th. However, if another boy aged 2 years also has an observed velocity on the 50th centile-8-31 cm a year in this case-the 95% confidence interval ranges from the 21st centile to the 79th. This ...

In a prospective one year study, comprising children with acute gastroenteritis admitted to hospital or treated as outpatients, the clinical and laboratory features of rotavirus diarrhoea (168 cases) were compared with those of enteric adenovirus (32 cases), bacterial (42), mixed (16), and non-specific (135) infections. The rotavirus disease was remarkably consistent, with a sudden onset of vom...