Table 4.

The relationship between age and sex and the prevalence and magnitude of scoliosis

Age	Male		Female
	Scoliosis (%)	Average Cobb angle	Scoliosis (%)	Average Cobb angle
20–29	1.2	–	4.2	–
30–39	0.6	15.0	2.5	23.0
40–49	1.5	12.0	2.0	12.3
50–59	3.5	11.8	7.8	15.7
60–69	4.7	14.2	9.2	21.4
70–79	8.8	13.6	20.7	14.7
80–89	14.6	18.4	34.5	19.9
>90	17.5	15.1	35.4	17.5