From: Temporal trends (1977-2007) and ethnic inequity in child mortality in rural villages of southern Guinea Bissau
Age at interview (years)
Ethnicity
n
mean
SD
Inter Quartile range
Balanta
1658
30.8
9.0
24
37
Beafada
2778
30.3
9.7
23
Fula
1361
9.4
other
2056
31.1
38
Total
7853
30.6