. Author manuscript; available in PMC: 2019 May 1.

Published in final edited form as: J Knee Surg. 2017 Jul 12;31(5):472–478. doi: 10.1055/s-0037-1604147

Table 3. Patient BMI by age and demographic region.

Data are reported as a mean ± standard deviation.

Age (years)	Midwest	West	Southeast	Northeast	p-value
< 20 (n=304)	24.2 ± 4.0	25.7 ± 4.7	24.8 ± 4.8	23.6 ± 2.3	0.39
20–29 (n=808)	26.2 ± 5.0	24.6 ± 3.1	25.8 ± 4.2	24.3 ± 4.0	0.013
30–39 (n=553)	27.7 ± 5.1	24.1 ± 3.5	27.9 ± 6.4	26.0 ± 4.6	< 0.01
40–49 (n=378)	26.8 ± 4.7	24.3 ± 3.5	27.0 ± 5.0	25.6 ± 4.2	0.07
50+ (n=107)	26.8 ± 4.2	26.1 ± 3.5	26.0 ± 4.2	24.8 ± 2.6	0.47