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Table 1 Prevalence of CCVD according to age and gender

From: Prevalence of congenital colour vision deficiency among Black school children in Durban, South Africa

Category Total
n (%)
Protans
n (%)
Deutans
n (%)
CCVD
n (%) [95% CI]
p-value
Age (years)
 7–12 719 7 (1.0) 6 (0.8) 13 (1.8) [0.7–2.8] 0.12
 13–17 586 3 (0.5) 13 (2.2) 16 (2.7) [1.1–4.2]  
Gender
 Male 601 (46.1) 9 (1.5) 16 (2.7) 25 (4.2) [3.1–6.4] 0.00
 Female 704 (53.9) 1 (0.1) 3 (0.4) 4 (0.5) [0.1–1.1]  
 Total 1305 10 (0.7) 19 (1.5) 29 (2.2) [0.9–3.1]