Important categorical variable definitions
1. Gender:
0 refers to Female
1 refers to Male
2. Smokers:
0 refers to Non-smoker
1 refers to Smoker
3. Tooth:
0 refers to No-Teeth
1 refers to With -Teeth
4. IRON SUPPL:
0 refers to PLACEBO SUPPL
1 refers to IRON SUPPL
5. VIT D SUPPL:
0 refers to PLACEBO SUPPL
1 refers to VIT D SUPPL
6. PROTEIN SUPPL:
0 refers to PLACEBO SUPPL
1 refers to PROTEIN SUPPL