Table 1.
Characteristics of the analysed sample population
| Total sample analysed (n 446) | (0–6) months (n 100) | (6–12) months (n 94) | (12–24) months (n 252) | P-value* | |||||
|---|---|---|---|---|---|---|---|---|---|
| n | % | n | % | n | % | n | % | ||
| Age (months) | |||||||||
| Mean | 12·5 | 3·0 | 7·9 | 17·6 | – | ||||
| sd | 7·0 | 1·5 | 1·5 | 4·0 | |||||
| Sex, girls | 201 | 44·0 | 43 | 43·1 | 45 | 45·3 | 113 | 43·8 | 0·79 |
| BMI† Z-score | |||||||||
| Mean | 0·3 | −0·9 | −0·3 | 1·0 | <0·001 | ||||
| sd | 1·8 | 2·0 | 1·4 | 1·5 | |||||
| Weight (kg)† | |||||||||
| Mean | 9·7 | 5·8 | 8·1 | 11·4 | – | ||||
| sd | 2·7 | 1·1 | 1·0 | 1·7 | |||||
| Height (cm)† | |||||||||
| Mean | 74·6 | 60·4 | 69·4 | 80·7 | – | ||||
| sd | 9·5 | 4·1 | 3·4 | 5·6 | |||||
| SEC‡ | |||||||||
| AB | 63 | 10·8 | 19 | 15·1 | 11 | 9·3 | 33 | 9·8 | 0·41 |
| C1 | 135 | 29·5 | 32 | 32·1 | 31 | 31·5 | 72 | 27·9 | |
| C2 | 248 | 59·7 | 49 | 52·8 | 52 | 59·2 | 147 | 62·3 | |
| Region | |||||||||
| Algiers | 169 | 47·3 | 36 | 44·8 | 39 | 51·6 | 94 | 46·6 | 0·83 |
| Oran | 106 | 24·7 | 27 | 28·0 | 19 | 20·4 | 60 | 25·0 | |
| Setif | 87 | 14·4 | 22 | 16·4 | 18 | 14·2 | 47 | 13·8 | |
| Djelfa | 84 | 13·6 | 15 | 10·8 | 18 | 13·8 | 51 | 14·6 | |
| Breastfed, % | 60·0 | 92·0 | 74·3 | 43·2 | – | ||||
SEC, socio-economic class.
*
P-values were calculated using the Student’s t test for age and BMI Z-score and using the Rao–Scott chi-square test for sex, SEC and region.
†
n 225 for the total population, n 44 for the 0- to 6-month group, n 48 for the 6- to 12-month group and n 133 for the 12- to 24-month group.
‡
AB was the highest class, C1 was the middle class and C2 was the lowest class.