hhinc10==     1.0000
hhinc10==     2.0000
hhinc10==     3.0000
hhinc10==     4.0000
hhinc10==     5.0000
hhinc10==     6.0000
hhinc10==     7.0000
b10mhypg==0-80th centile - normal behaviour
b10mhypg==81st-95th centile -moderate behaviour problems
b10mhypg==95+ centile - severe behaviour problems
b10mruttg==0-80th centile - normal behaviour
b10mruttg==81st-95th centile -moderate behaviour problems
b10mruttg==95+ centile - severe behaviour problems