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Table 2 Multivariate survival analysis of the association between halitosis and time to pregnancy

From: Association between halitosis and female fecundability in China: a prospective cohort study

Exposure Categories

Observation period = 12 months

Observation period = 24 months

Pregnancy n (%)

FR

95% CI

aaFR

95% CI

Pregnancy n (%)

FR

95% CI

aaFR

95% CI

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

  1. Abbreviation: aFR adjusted fecundability ratio
  2. 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)