<Tr> <Th_colspan="7"> Statin equivalent dosages </Th> </Tr> <Tr> <Th>% LDL reduction (approx .) </Th> <Th> Atorvastatin </Th> <Th> Fluvastatin </Th> <Th> Lovastatin </Th> <Th> Pravastatin </Th> <Th> Rosuvastatin </Th> <Th> Simvastatin </Th> </Tr> <Tr> <Td> 10--20% </Td> <Td>--</Td> <Td> 20 mg </Td> <Td> 10 mg </Td> <Td> 10 mg </Td> <Td>--</Td> <Td> 5 mg </Td> </Tr> <Tr> <Td> 20--30% </Td> <Td>--</Td> <Td> 40 mg </Td> <Td> 20 mg </Td> <Td> 20 mg </Td> <Td>--</Td> <Td> 10 mg </Td> </Tr>

When were statins first prescribed in the uk