Table 2

One, five, and 10 year survival (%) after ALL in childhood (with 95% confidence intervals), by deprivation category and calendar period of diagnosis with mean percentage change in survival between successive five- year calendar periods: England and Wales, patients diagnosed 1971–90

  • 2-150 Mean percentage change in survival to one year between successive five-year calendar periods; percentage change is significant if confidence intervals do not include zero.

  • 2-151 Mean percentage change in survival to five years between successive five-year calendar periods; percentage change is significant if confidence intervals do not include zero.

  • 2-152 Mean percentage change in survival to 10 years between successive five-year calendar periods; percentage change is significant if confidence intervals do not include zero.

  • 2-153 Although an increase of 14% is significant, confidence limits cannot be calculated in this instance because the regression line described by these three survival estimates has a standard error of zero.

  • 2-154 p values for log rank test comparing survival one, five, and 10 years after diagnosis for children in each deprivation category, after excluding cases for whom a deprivation category could not be assigned.