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Table 1 Characteristics of patients’ backgrounds at Osaka Dental University Hospital

From: Analysis of factors associated with maintenance discontinuation in implant patients

 

Continuation group

Discontinuation group

p value

Address 

 Within Osaka city

180

73

 

 Outside Osaka city

325

110

0.326

Sex

 Female

326

91

 

 Male

179

92

0.001

Age

 30–64

389

106

 

 ≤29

16

31

 

 65≤

100

46

<0.001

PCR*

 20 % or less

143

38

 

 20 % or more

362

145

0.050

PCR*2

 20 % or less

306

70

 

 20 % or more

199

113

<0.001

Number of implants

 Median

2

2

0.141

Number of missing teeth

 Median

4

5

0.481

  1. Proportions across levels of categorical variables were compared using the χ2 test and Fisher exact test. Medians for continuous variables were compared using the Mann–Whitney U test
  2. Age age at implant placement, PCR * 1 PCR level at the initial visit, PCR * 2 PCR level following attachment of the superstructure