Table 3 Univariate logistic regression for association of diverse variables with apical periodontitis

Age Category (Years)

 18–29

68 (22.7)

51 (75.0)

17 (25.0)

1

Reference

 30–39

61 (20.3)

43 (70.7)

18 (29.5)

0.22

1.25

0.57–2.73

0.566

 40–49

51 (17.0)

27 (52.9)

24 (47.0)

0.98

2.66

1.22–5.79

0.013

 50–59

55 (18.3)

40 (72.7)

15 (27.3)

0.11

1.12

0.50–2.52

0.775

 ≥ 60

65 (21.7)

44 (67.7)

21 (32.3)

0.35

1.43

0.67–3.04

0.352

Sex

 Male

128 (42.7)

77 (60.1)

51 (39.8)

1

Reference

 Female

172 (57.3)

128 (74.4)

44 (25.6)

-0.65

0.51

0.31–0.84

0.009*

Tooth Type

 Incisors

48 (16.0)

38 (79.1)

10 (20.9)

1

Reference

 Canines

14 (4.7)

10 (71.4)

4 (28.5)

0.41

1.52

0.39–5.87

0.544

 Premolars

75 (25.0)

53 (70.7)

22 (29.3)

0.45

1.57

0.67–3.71

0.297

 Molars

163 (54.3)

104 (63.8)

59 (36.2)

0.76

2.15

1.002–4.63

0.049

Root Canal Treatment Quality

 Adequate

137 (45.7)

123 (89.8)

14 (10.2)

1

Reference

 Inadequate

163 (54.3)

82 (50.3)

81 (49.7)

2.16

8.67

4.61–16.33

< 0.001*

Coronal Restoration Quality

 Adequate

138 (46.0)

117 (84.8)

21 (15.2)

1

Reference

 Inadequate

162 (54.0)

88 (54.3)

74 (45.7)

1.54

4.68

2.68–8.18

< 0.001*

Coronal Restoration Type

 Lost Restoration

46 (15.3)

17 (36.9)

29 (63.1)

1

Reference

 Crown

126 (42.0)

93 (73.8)

33 (26.2)

-1.57

0.20

0.10–0.42

< 0.001*

 Filling

128 (42.7)

95 (74.2)

33 (25.8)

-1.59

0.20

0.09–0.41

< 0.001*