Teenage pregnancy - Conceptions below age 18 (change in rate)

Difference in under-18 conception rate between 1998 and 2001, divided by the under-18 conception rate for 1998, expressed as a percentage improvement.

The five bands should be interpreted as follows. The bands labelled "A" or "B" indicate that the improvement in performance is statistically significant, with the probability of this level of improvement arising by chance being less then 5% for Band B and less than 1% for Band A. Similarly, Bands D and E indicate levels of statistically significant deterioration, with the probability of this level of deterioration arising by chance being less then 5% for Band D and less than 1% for Band E. For Band C, although there may be some improvement or deterioration, the role of chance cannot reasonably be excluded and no firm conclusions about the performance can be made.