Table 3 Evaluation of standard deviation of anthropometric indices overall and by age group, by the quality of age ascertainment (based on percentage of children with exact date of birth)

WHZ

N

272

309

131

Children 6–59 m

1.03

1.06

1.08

Children 6–23 m

1.08

1.11

1.15

Children 24–59 m

0.99

1.02

1.03

Difference^a

0.09***

0.10***

0.12***

Correlation^b

0.62***

0.51***

0.53***

% younger^c better

5.2%

6.9%

2.3%

WAZ

N

272

309

131

Children 6–59 m

1.02

1.05

1.05

Children 6–23 m

1.10

1.14

1.14

Children 24–59 m

0.96

0.99

0.99

Difference^a

0.15***

0.15***

0.15***

Correlation^b

0.64***

0.55***

0.53***

% younger^c better

2.0%

3.0%

0.6%

HAZ

N

272

309

131

Children 6–59 m

1.17

1.24

1.27

Children 6–23 m

1.21

1.28

1.29

Children 24–59 m

1.13

1.20

1.24

Difference^a

0.09***

0.08***

0.06***

Correlation^b

0.68***

0.69***

0.64***

% younger^c better

8.3%

11.5%

5.8%

MUACZ

N

264

307

131

Children 6–59 m

0.95

0.97

0.97

Children 6–23 m

1.00

1.02

1.04

Children 24–59 m

0.90

0.92

0.92

Difference^a

0.10***

0.10***

0.12***

Correlation^b

0.62***

0.55***

0.57***

% younger^c better

4.4%

4.8%

1.1%

BMIZ

N

272

309

131

Children 6–59 m

1.05

1.09

1.12

Children 6–23 m

1.10

1.14

1.18

Children 24–59 m

1.01

1.05

1.06

Difference^a

0.09***

0.10***

0.12***

Correlation^b

0.68***

0.54***

0.61***

% younger^c better

5.9%

8.0%

2.5%