Degree of

deformity

Operational

requirements

N

Mean

(Me)

(Std. Error)

(SE)

Std. Dev.

(SD)

Min

Max

T(df)

p

MD

15 ≤ HVA < 30

Ù 9 ≤ IMA < 13

Chevron

54

0.4627

0.0124

0.08924

0.34

0.73

t(69) = 1.423

0.159

according to Golden

17

0.4296

0.0146

0.06036

0.32

0.56

Total

71

0.4548

0.00997

0.08409

0.32

0.73

MoD

30 ≤ HVA < 40

Ù 13 ≤ IMA < 20

Chevron

47

0.4443

0.00665

0.0457

0.34

0.56

t(112) = −0.178

0.859

according to Golden

67

0.4459

0.00596

0.04879

0.34

0.55

Total

114

0.4453

0.00443

0.04729

0.34

0.56

SD

HVA ≥ 40

Ù IMA ≥ 20

Chevron

4

0.3991

0.03674

0.07348

0.33

0.50

t(9) = −3.037

0.014

according to Golden

7

0.5123

0.01930

0.05106

0.43

0.58

Total

11

0.4711

0.02421

0.08029

0.33

0.58

Total

196