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Table 3 Comparison of mean face dimensions between South Africa, Korea and USA

From: Respirator fit of a medium mask on a group of South Africans: a cross-sectional study

Face Dimensions

South African

this study

Korean - Kim et al., 2003

American - Oestenstad and Perkins, 1992

 

Male

n = 14

Female

n = 15

Male

n = 70

Female

n = 40

Male

n = 38

Female

n = 30

Face width (mm)

Mean (SD)

150.3

(6.6)

141.9

(7.9)

147.6

(5.0)

136.6

(4.9)

139.0

(8.0)

129.0

(6.0)

Face length (mm)

Mean (SD)

117.9

(8.3)

111.7

(6.6)

120.6

(5.9)

109.6

(4.2)

126.0

(7.0)

118.0

(5.0)

Lip width (mm)

Mean (SD)

50.9*

53.5*

49.3

(3.8)

44.1

(3.2)

51.0

(4.0)

48.0

(3.0)

Nose width (mm)

Mean (SD)

41*

40*

36.7

(2.7)

33.2

(1.9)

36.0

(3.0)

33.0

(4.0)