Height-for-age BOYS 5 to 19 years (z-scores) 200 3 2 190 200 190 1 180 180 0 170 -1 -2 Height (cm) 160 Months Years 170 160 -3 150 150 140 140 130 130 120 120 110 110 100 100 90 3 6 9 5 3 6 9 6 3 6 9 7 3 6 9 8 3 6 9 9 3 6 9 10 3 6 9 11 3 6 9 12 3 6 9 13 3 6 9 14 3 6 9 15 3 6 9 16 3 6 9 17 90 3 6 9 18 19 Age (completed months and years) 2007 WHO Reference