Table 6

Univariate and Multivariate analysis describing the association between socio-economic factors and infant formula feeding at 1st visit (n = 2145)

Maternal status
No of infants
Infants fed formula (%)
OR (95%CI)
p
Adjusted OR* (95%CI)
p

Age in years






> 34
340
183 (54)
1

1

30–34
647
321 (50)
0.85 (0.65,1.10)
0.21
0.84 (0.60,1.17)
0.30
25–29
524
319 (61)
1.34 (1.01,1.76)
0.04
1.06 (0.75,1.50)
0.73
20–24
312
244 (78)
3.08 (2.18,4.34)
<0.001
1.83 (1.20,2.82)
<0.01
<20
179
158 (88)
6.46 (3.91,10.67)
<0.001
6.24 (2.84,13.67)
<0.001
Not Known
143





Mother Smoker






No
1167
615 (53)
1

1

Yes
593
482 (81)
3.89 (3.07,4.93)
<0.001
2.44 (1.84,3.22)
<0.001
Not Known
385





Mother employed






Yes
1035
542 (52)
1

1

No
649
467 (72)
2.33 (1.89,2.88)
<0.001
1.39 (1.08,1.78)
<0.01
Not Known
461





DEPCAT **






1
193
55 (29)
1

1

2
165
66 (40)
1.67 (1.08,2.60)
0.02
0.90 (0.51,1.58)
0.71
3
222
124 (56)
3.18 (2.11,4.78)
<0.001
2.81 (1.69,4.69)
<0.001
4
218
108 (50)
2.46 (1.64,3.71)
<0.001
1.82 (1.10,3.02)
0.02
5
254
159 (63)
4.20 (2.81,6.28)
<0.001
3.02 (1.82,5.03)
<0.001
6
462
288 (62)
4.15 (2.88,5.98)
<0.001
2.38 (1.50,3.78)
<0.001
7
600
490 (82)
11.18 (7.68,16.26)
<0.001
5.49 (3.42,8.84)
<0.001
Not Known
31






* Adjustment was made for the other three socioeconomic variables in the table

** DEPCAT 7-most deprived, 1-most affluent.

Tappin et al. International Breastfeeding Journal 2006 1:11   doi:10.1186/1746-4358-1-11