Table 2 Multivariate polytomous logistic regression of factors associated with ANC initiation in the 2 nd and 3 rd trimesters relative to 1 st trimester in three districts in Tanzania, 2011 (n = 777)
| Â | ANC initiation in the 2ndtrimester relative to 1sttrimester | ANC initiation in the 3 rdtrimester relative to 1sttrimester | ||
|---|---|---|---|---|
Variable | Related risk ratio (RRR) | 95% confidence interval (CI) | Related risk ratio (RRR) | 95% confidence interval (CI) |
Pregnancy intensions | Â | Â | Â | Â |
 Intendeda | 1.00 | - | 1.00 | - |
 Mistimed | 1.68** | 1.10-2.58 | 2.81 | 1.41-5.59 |
 Unwanted | 2.00* | 1.05-3.82 | 4.10*** | 1.68-10.00 |
Gravidity-Age intentions | Â | Â | Â | Â |
 Gravidity | 1.58* | 1.04-2.39 | 2.27** | 1.21-4.27 |
 Age | 1.06* | 1.01-1.12 | 1.04 | 0.96-1.13 |
 Gravidity*Age | 0.99 | 0.98-1.00 | 0.98* | 0.97-1.00 |
Education | Â | Â | Â | Â |
 None (never been to school)a | 1.00 | - | 1.00 | - |
 Primary/higher | 0.83 | 0.50-1.38 | 2.12 | 0.81-5.57 |
Household wealth | Â | Â | Â | Â |
 Poora | 1.00 | - | 1.00 | - |
 Middle | 1.11 | 0.71-1.75 | 1.31 | 0.62-2.77 |
 Rich | 1.73 | 0.98-3.06 | 2.38* | 1.01-5.64 |
Marital status | Â | Â | Â | Â |
 Marrieda | 1.00 | - | 1.00 | - |
 Ever married | 1.45 | 0.53-3.95 | 3.09 | 0.86-11.08 |
 Single | 1.21 | 0.69-2.11 | 1.61 | 0.15-17.79 |
Religion | Â | Â | Â | Â |
 Christiana | 1.00 | - | 1.00 | - |
 Muslim | 1.31 | 0.85-2.02 | 0.9 | 0.46-1.79 |
 Other (e.g. traditional) | 2.41 | 0.71-8.21 | 1.61 | 0.15-17.79 |
District | Â | Â | Â | Â |
 Kilomberoa | 1.00 | - | 1.00 | - |
 Rufiji | 0.97 | 0.55-1.69 | 0.90 | 0.36-2.26 |
 Ulanga | 0.66 | 0.38-1.12 | 0.45 | 0.17-1.16 |
Travel time to health facility (hours) | 1.23 | 0.95-1.59 | 1.26 | 0.86-1.84 |