Table 3.
Summary estimates of sensitivity and specificity across all countries
| Overall results | Any thinness (BMI < 18·5 kg/m2) | Moderate or severe thinness (BMI < 17 kg/m2) | Severe thinness (BMI < 16 kg/m2) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| MUAC (cm) | Sensitivity | 95 % CI | Specificity | 95 % CI | Sensitivity | 95 % CI | Specificity | 95 % CI | Sensitivity | 95 % CI | Specificity | 95 % CI |
| <19·0 | 0·6 | 0·2, 1·0 | 99·9 | 99·9, 100·0 | 1·5 | 0·5, 2·5 | 99·9 | 99·8, 100·0 | 4·2 | 1·5, 6·9 | 99·9 | 99·8, 99·9 |
| <19·5 | 1·2 | 0·1, 2·4 | 99·8 | 99·6, 100·0 | 3·2 | 0·4, 6·0 | 99·8 | 99·6, 100·0 | 7·2 | 1·4, 13·0 | 99·8 | 99·5, 100·0 |
| <20·0 | 2·2 | 0·1, 4·3 | 99·8 | 99·5, 100·0 | 5·8 | 1·0, 10·7 | 99·7 | 99·4, 100·0 | 13·5 | 3·6, 23·3 | 99·7 | 99·3, 100·0 |
| <20·5 | 4·1 | 0·6, 7·6 | 99·6 | 99·1, 100·0 | 10·0 | 2·6, 17·4 | 99·4 | 98·9, 100·0 | 20·6 | 7·9, 33·3 | 99·3 | 98·5, 100·0 |
| <21·0 | 5·9 | 1·3, 10·4 | 99·5 | 99·0, 100·0 | 13·7 | 4·8, 22·7 | 99·3 | 98·6, 100·0 | 25·4 | 11·7, 39·1 | 99·0 | 97·9, 100·0 |
| <21·5 | 9·5 | 3·6, 15·4 | 99·3 | 98·7, 99·8 | 20·0 | 9·9, 30·1 | 98·8 | 97·8, 99·7 | 35·6 | 21·4, 49·8 | 98·3 | 97·0, 99·6 |
| <22·0 | 13·5 | 6·5, 20·5 | 99·2 | 98·7, 99·8 | 28·1 | 16·8, 39·5 | 98·4 | 97·4, 99·5 | 44·8 | 31·0, 58·5 | 97·7 | 96·2, 99·2 |
| <22·5 | 19·9 | 10·8, 29·0 | 98·5 | 97·5, 99·5 | 37·3 | 24·7, 49·9 | 97·0 | 95·1, 99·0 | 54·6 | 41·0, 68·1 | 95·9 | 93·5, 98·3 |
| <23·0 | 26·4 | 17·3, 35·5 | 97·8 | 96·7, 99·0 | 47·3 | 36·1, 58·6 | 95·7 | 93·6, 97·8 | 62·6 | 51·5, 73·7 | 94·0 | 91·5, 96·6 |
| <23·5 | 37·4 | 27·0, 47·7 | 95·7 | 93·5, 97·8 | 61·2 | 50·6, 71·8 | 92·2 | 88·7, 95·7 | 72·7 | 63·1, 82·3 | 89·7 | 85·9, 93·6 |
| <24·0 | 45·2 | 34·9, 55·5 | 93·9 | 91·2, 96·6 | 71·4 | 62·2, 80·5 | 89·4 | 85·0, 93·7 | 80·9 | 72·9, 88·9 | 86·3 | 81·4, 91·2 |
| <24·5 | 58·2 | 48·6, 67·8 | 89·7 | 85·8, 93·7 | 82·1 | 75·7, 88·5 | 83·2 | 77·6, 88·7 | 88·8 | 83·0, 94·6 | 79·6 | 73·5, 85·8 |
| <25·0 | 65·5 | 56·7, 74·3 | 86·5 | 81·8, 91·3 | 86·7 | 81·6, 91·90 | 78·9 | 72·6, 85·2 | 90·6 | 85·5, 95·8 | 75·2 | 68·4, 82·0 |
| <25·5 | 77·0 | 69·4, 84·7 | 79·6 | 72·6, 86·5 | 92·1 | 88·4, 95·7 | 70·2 | 62·1, 78·3 | 93·1 | 88·7, 97·5 | 66·7 | 58·3, 75·1 |
| <26·0 | 83·6 | 77·5, 89·8 | 74·3 | 66·2, 82·3 | 95·5 | 93·0, 98·0 | 64·2 | 55·1, 73·3 | 95·6 | 92·1, 99·1* | 60·9 | 51·4, 70·3* |
| <26·5 | 90·3 | 86·1, 94·4 | 64·6 | 55·1, 74·1 | 96·6 | 94·5, 98·7 | 54·6 | 44·6, 64·6 | 96·1 | 92·8, 99·4* | 51·8 | 41·7, 61·9* |
MUAC, mid-upper arm circumference; 95 % CI: 95 % confidence interval calculated using mixed-effects logistic regression model.
*
Unstable estimates in model due to cell counts < 10.