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Table 7 Results of Poisson regression for the extent of negative impacts (‘fairly often’ or ‘very often’) on the studied pregnant women

From: Impact of periodontal conditions on the quality of life of pregnant women: a cross-sectional study

Variables

Model 1a

Model 2b

Model 3c

 

IRR

95 % CI

P value

IRR

95 % CI

P value

IRR

95 % CI

P value

Model 1

         

VPI

  

0.011

  

0.057

  

0.056

 <50 % site with plaque vs. 50 % + site with plaque

0.56

0.36-0.87

 

/

/

 

/

/

 

BOP

  

0.052

  

0.105

  

0.106

 <25 % site with bleeding vs. 25 % + site with bleeding

/

/

 

/

/

 

/

/

 

PPD

  

0.332

  

0.582

  

0.961

 <25 % site with PD > =4 vs. 25 % + site with PD > =4

/

/

 

/

/

 

/

/

 

CAL

  

0.204

  

0.107

  

0.672

 0 % site with CAL > =4 vs. 0 % + site with CAL > =4

/

/

 

/

/

 

/

/

 

Model 2

         

Trimesters

     

0.960

  

0.690

 First vs. Second

   

/

/

 

/

/

 

 vs. Third

   

/

/

 

/

/

 

Previous births

     

0.879

  

0.068

 None vs. One or more

   

/

/

 

/

/

 

Utilization of dental services

     

0.006

  

0.044

 No vs. Yes

   

2.52

1.30-4.88

 

2.07

1.02-4.21

 

Frequency of nausea-vomiting

     

0.103

  

0.101

 Once or less vs. Twice

   

/

/

 

/

/

 

 vs. Three times or more

   

/

/

 

/

/

 

Self-repored systematic disease

     

0.152

  

0.172

 No vs. Yes

   

/

/

 

/

/

 

Model 3

         

Age (Years)

        

0.009

 25 or below vs. 26-30

      

1.71

0.97-3.02

 

 vs. 31-35

      

1.49

0.68-3.25

 

 vs. 36 or above

      

5.06

1.93-13.3

 

Location

        

0.124

 Urban vs. Rural

      

/

/

 

Marital status

        

0.996

 Married vs. Single

      

/

/

 

Birth place

        

0.065

 Shanghai vs. Other places

      

/

/

 

Education level

        

0.244

 Higher secondary school or below vs. Matriculation or bachelor degree or above

   

/

/

 

Monthly household income

        

0.283

 Less than RMB 6000 vs. RMB6000 or more

     

/

/

 

Coverage of dental insurance

        

0.732

 No vs. Yes

      

/

/

 

Tooth loss

        

0.011

 0 teeth missing vs. 1+ teeth missing

      

1.85

1.15-2.96

 
  1. aLikelihood Ratio χ2 = 11.4, df = 4, p =0.023; Deviance ratios = 1.02
  2. bLikelihood Ratio χ2 = 22.2, df = 11, p =0.023; Deviance ratios = 0.99
  3. cLikelihood Ratio χ2 = 49.5, df = 22, p =0.001; Deviance ratios = 0.96
  4. Model 1: Poisson regression for periodontal condition variables
  5. Model 2: Poisson regression for periodontal condition variables after adjustment for pregnancy-related variables
  6. Model 3: Poisson regression for periodontal condition variables after adjustment for pregnancy-related variables and possible confounders
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Health and Quality of Life Outcomes

ISSN: 1477-7525

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