Table 1 Feature selection results
Mutual information feature selection | Chi2 feature selection | F class if feature selection | Step forward feature selection | Step backward feature selection | |
|---|---|---|---|---|---|
0 | Age in 5-year groups | Region | Region | Age in 5-year groups | Age in 5-year groups |
1 | Region | Highest educational level | Type of place of residence | Region | Region |
2 | Number of antenatal care visits | Source of drinking water | Highest educational level | Number of antenatal care visits | Number of antenatal care visits |
3 | Highest educational level | Religion | Source of drinking water | Source of drinking water | Highest educational level |
4 | Religion | Frequency of reading newspaper or magazine | Religion | Religion | Source of drinking water |
5 | Frequency of watching television | Frequency of listening to radio | Frequency of watching television | Number of household members | Religion |
6 | Duration of current pregnancy | Frequency of watching television | Duration of current pregnancy | Frequency of listening to radio | Number of household members |
7 | Birth history | Currently breastfeeding | Current pregnancy wanted | Duration of current pregnancy | Frequency of listening to radio |
8 | History of contraceptive use | Mosquito bed net | History of contraceptive use | birth history | Duration of current pregnancy |
9 | Body mass index | Husband/partner's education level | Husband/partner's education level | Current pregnancy wanted | birth history |
10 | Husband/partner's education level | Respondent's occupation | Respondent's occupation | History of contraceptive use | Current pregnancy wanted |
11 | Husband/partner's occupation | History of the place of delivery | History of the place of delivery | Body mass index | Body mass index |
12 | Respondent's occupation | Iron tablet during pregnancy | Iron tablet during pregnancy | Husband/partner's education level | Husband/partner's education level |
13 | History of the place of delivery | Had diarrhea recently | Had diarrhea recently | Husband/partner's occupation | Husband/partner's occupation |
14 | Vitamin a in last 6 months | Vitamin a in last 6 months | Vitamin a in last 6 months | Respondent's occupation | Respondent's occupation |
15 | Wealth index combined | Wealth index combined | Wealth index combined | Wealth index combined | Wealth index combined |
Accuracy with RF | 89.091221 | 76.120941 | 82.85518 | 0.91813755 | 0.917751321 |