| 1 | A | B | C | D |
| --- | --- | --- | --- | --- |
| 2 | predicted probability of chronic ear infections for two breastfeeding variables, by aboriginal identity for children aged 1 to 5, 2006 |  |  |  |
| 3 |  | aboriginal identity |  |  |
| 4 |  | off-reserve first nations | metis | inuit |
| 5 |  | predicted probability |  |  |
| 6 | feeding history |  |  |  |
| 7 | only breastfed | 0.02 | 0.03 | 0.13 |
| 8 | both breastfed and bottle-fed | 0.04 | 0.04 | 0.08 |
| 9 | only bottle-fed | 0.05 | 0.04 | 0.06 |
| 10 | breastfeeding duration |  |  |  |
| 11 | never breastfed | 0.05 | 0.04 | 0.07 |
| 12 | breastfed 0 to 6 months | 0.04 | 0.04 | 0.10 |
| 13 | breastfed more than 6 months | 0.03 | 0.03 | 0.07 |

Question: after several factors were controlled for in a logistic regression model, which feeding history of first nations children living off reserve were significantly less likely to have chronic ear infections, who were only breastfed or children who were only bottle-fed?
Answer: only breastfed

Question: which breastfeeding duration of off-reserve first nations children were significantly less likely to have chronic ear infections, who were breastfed for more than six months or their counterparts who were not breastfed?
Answer: breastfed more than 6 months