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Table 4 Calculus prevalence and extent in 12-year-old Puerto Ricans by gender and school, 2011

From: Prevalence of gingivitis and calculus in 12-year-old Puerto Ricans: a cross-sectional study

   

Total Calculus

(yes/no)

Supragingival Calculus

Subgingival Calculusa

Strata

N

Wt

N

%

95% CI

p-value2b

%

95% CI

p-value2b

%

95% CI

p-value2b

Gender

 Female

841

814

57.31

(51.10–63.51)

0.005

52.37

(46.27–58.47)

0.001

18.34

(13.35–23.32)

0.34

 Male

745

773

66.28

(60.95–71.60)

62.06

(56.59–67.65)

21.30

(16.72–25.88)

School Type

 Rural- public

597

612

52.68

(45.93–59.44)

0.63

46.07

(39.13–53.01)

0.47

20.80

(15.42–26.18)

0.02

 Urban- public

628

722

67.39

(59.49–75.29)

0.55

64.18

(56.57–71.80)

0.47

20.25

(13.73–26.76)

0.23

 Private

361

253

66.60

(57.23–75.98)

–

63.49

(55.08–71.89)

–

15.98

(7.94–24.01)

–

  1. aalone or accompanied by supragingival calculus
  2. 2bp-values were obtained from multivariate logistic regression models (outcome categories: supragingival, subgingival calculus, and none), which included gender, school type (3 categories), and health region (11 regions)