Wasem et al. (Indian)

2017

BZD (M) = 111.2 ± 10.32 mm

BZD (F) = 131.5 ± 8.80 mm

BZD = 120.2 ± 13.96 mm

$\text{WUCI}=\frac{\text{BZD}}{16}$

Ewa et al. (USA)

2017

BZD (Asian, M) = 180.4 ± 12.15 mm

BZD (African-American, M ) = 178.9 ± 14.52 mm

BZD (White, M) = 175 ± 10.65 mm

BZD (Asian, F) = 168.7 ± 10.43 mm

BZD (White, F) = 166.4 ± 10.63 mm

Afro-American

$\text{WUCI}\left(\text{M}\right)=\frac{\text{BZD}}{18}$

$\text{WUCI}\left(\text{F}\right)=\frac{\text{BZD}}{19}$

Asian

$\text{WUCI}=\frac{\text{BZD}}{19}$

White

$\text{WUCI}\left(\text{F}\right)=\frac{\text{BZD}}{19}$

$\text{WUCI}\left(\text{M}\right)=\frac{\text{BZD}}{20}$

Sex:

$\text{WUCI}\left(\text{F}\right)=\frac{\text{BZD}}{19}$

$\text{WUCI}\left(\text{M}\right)=\frac{\text{BZD}}{20}$

Bhagat et al. (India)

2018

BZD (M) = 111.26 ± 5.03 mm

BZD (F) = 112.48 ± 6.96 mm

$\text{WUCI}=\frac{\text{BZD}\left(\text{Berry}\right)}{16}$

Abitha et al. (Brazil)

2019

BZD (M) 106.3 mm

BZD (F) = 103.7 mm

$\text{WUCI}=\frac{\text{BZD}\left(\text{Berry}\right)}{16}$

Aead et al. (Arabi Saudi Arabia)

2019

BZD (M) = 113.9 ± 3.2 mm

BZD (F) = 121.3 ± 7.79 mm

Debnath et al. (india)

2019

BZD (M) = 132.17 ± 4.98 mm

BZD (F) = 119.80 ± 5.26 mm

BZD = 125.98 mm