Table 1.

Characteristics of boys with and without Sever’s disease

Characteristic	Total participants (N = 106)	Sever’s disease group (n = 53)	Control group (n = 53)	P value
Age in yearsa	10.73 ± 1.36 (10.47–10.99)	10.66 ± 1.50 (10.25–11.06)	10.81 ± 1.20 (10.48–111.14)	0.570
Height in cma	142.99 ± 9.21 (141.23–144.74)	144.05 ± 10.75 (141.16–146.95)	141.92 ± 7.31 (139.95–143.89)	0.235
Weight in kga	38.35 ± 7.50 (36.92–39.78)	40.21 ± 8.38 (37.95–42.47)	36.49 ± 6.03 (34.86–38.11)	0.005
BMIa	18.63 ± 2.24 (18.20–19.05)	19.18 ± 1.88 (18.68–19.69)	18.07 ± 2.44 (17.41–18.73)	0.009
Heel affected, right/left	80 right/26 left	40 right/13 left	40 right/13 left	–

^aThe cells in these rows show means±standard deviations, with 95% confidence intervals in parentheses

Abbreviation: BMI body mass ind