 
Total N

Slim n

WHZ_{−2} (n = 2 022)

MUAC_{125} (n = 983)


Covariates
   
Sensitivity

95 % CI

Specificity

95 % CI

Sensitivity

95 % CI

Specificity

95 % CI


Long legs

Yes

4,309

847

84.2

75.9

92.5

82.9

73.7

92.1

32.2

26.4

38.0

96.8

90.2

100

No

6,079

536

68.3

63.9

72.8

95.2

90.2

100

32.0

28.0

36.1

97.5

92.9

100

Sex

Male

5,020

720

73.4

67.4

79.3

93.6

86.9

100

25.9

20.9

30.9

99.2

93.7

100

Female

5,368

663

68.8

62.7

75.0

93.4

86.6

100

33.6

28.7

38.6

100

94.8

100

Age < 24 months

Yes

3,754

664

75.0

69.9

80.2

95.0

89.2

100

57.4

51.1

63.7

87.7

80.6

94.8

No

6,634

719

65.8

59.1

72.5

94.1

86.9

100

18.1

14.0

22.1

97.6

93.1

100

Total
 
10,388

1,383

70.6

65.4

75.9

93.9

88.3

99.6

31.0

26.8

35.2

98.4

93.9

100

 Slimness was defined as a WAZ<−2 in children with no linear growth retardation, i.e. with HAZ≥−2. Adjusted sensitivity and specificity are derived from multivariate multilevel linear regression models, with “survey” as random effect. The regression coefficients represent the absolute % in the dependent variable (WHZ2 or MUAC125) between the categories of the independent variable (slimness). Sensitivity is computed by summing the regression coefficient with the constant of the regression model. Specificity is computed by using the reciprocal of the dependent and independent variables in the model. All models were adjusted for all covariates. Interactions between covariates and slimness were tested all together through a chunk test. The chunk test was highly significant for both indicators, and all covariates had a modifying effect on the sensitivity and specificity