Exposure Categories | Observation period = 12 months | Observation period = 24 months |
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Pregnancy n (%) | FR | 95% CI | aaFR | 95% CI | Pregnancy n (%) | FR | 95% CI | aaFR | 95% CI |
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Halitosis |
 No | 2886 (80.8) | Ref | \ | Ref | \ | 3089 (86.5) | Ref | \ | Ref | \ |
 Yes | 250 (73.1) | 0.84 | 0.74–0.95 | 0.82 | 0.72–0.94 | 280 (81.9) | 0.86 | 0.76–0.97 | 0.84 | 0.74–0.96 |
- Abbreviation: aFR adjusted fecundability ratio
- aadjusting for female age at preconception care (years), BMI at preconception care (kg/m2), female occupation (teachers, civil servants and businessmen (reference); farmers, workers and waiter; housewife or others), education level (years), smoking status (no, yes), alcohol consumption (no, occasional, frequent, unknown), dislike to eat vegetables (no, yes), like to eat raw meat (no, yes), perceived life or work -related stress (no, yes), tension with relatives, friends or colleagues (no, yes), financial pressure (no, yes), medical history (no, yes), gingival bleeding (no, yes)