Table 9 Discriminant validity: COHIP-SF-19 scores and socio-demographic, behavioural, clinical variables (whole sample, n = 557)

Gender

 Male (262)

14.45 ± 3.84

13.12 ± 2.65

31.46 ± 5.31

59.00 ± 9.49

 Female (295)

13.73 ± 3.60

− 0.05 [− 0.1; 0.03]

0.04

12.62 ± 2.88

− 0.05 [− 0.09; − 0.003]

0.03

30.49 ± 6.07

− 0.03 [− 0.07; 0.007]

0.05

56.84 ± 10.31

− 0.04 [− 0.08; − 0.01]

< 0.01

Region

 South (375)

14.55 ± 3.5

13.11 ± 2.62

31.45 ± 5.45

59.12 ± 9.35

 North (112)

13.91 ± 3.4

− 0.02 [− 0.1; 0.07]

0.61

12.81 ± 2.69

− 0.02 [− 0.08; 0.04]

0.55

30.83 ± 4.81

− 0.01 [− 0.06; 0.03]

0.50

57.56 ± 8.35

− 0.02 [− 0.07; 0.03]

0.38

 Islands (70)

11.73 ± 4.5

− 0.2 [− 0.36; − 0.14]

< 0.01

11.56 ± 3.39

− 0.15 [− 0.22; − 0.07]

< 0.01

28.37 ± 7.73

− 0.1 [− 0.16; − 0.05]

< 0.01

51.66 ± 13.01

− 0.17 [− 0.22; − 0.11]

< 0.01

Ethnicity

 Oceanian (161)

13.17 ± 3.95

12.13 ± 2.99

30.08 ± 6.15

55.38 ± 10.8

 European (42)

16.36 ± 2.82

0.18 [0.07; 0.29]

< 0.01

14.26 ± 1.82

0.17 [0.07; 0.26]

< 0.01

32.71 ± 5.42

0.09 [0.02; 0.16]

0.01

63.33 ± 7.83

0.12 [0.04; 0.19]

< 0.01

 Multiracial (255)

14.07 ± 3.53

0.07 [0.004; 0.13]

0.04

12.86 ± 2.77

0.06 [0.01; 0.12]

0.02

30.88 ± 5.47

0.03 [− 0.01; 0.7]

0.13

57.81 ± 9.49

0.04 [0.009; 0.08]

0.04

 Others (90)

14.60 ± 3.63

0.07 [− 0.01; 0.15]

0.09

13.38 ± 2.55

0.1 [0.03; 0.17]

0.004

31.72 ± 5.92

0.08 [0.02; 0.13]

< 0.01

59.7 ± 9.56

0.06 [0.001; 0.11]

0.04

Place of living

 Tribe/Squat (203)

13.16 ± 3.81

12.01 ± 3.13

29.9 ± 6.16

55.08 ± 10.65

 Town/village (351)

14.58 ± 3.58

0.54 [− 0.01; 0.12]

0.1

13.32 ± 2.45

0.12 [0.07; 0.17]

< 0.01

31.48 ± 5.4

0.06 [0.02; 0.1]

< 0.01

59.38 ± 9.17

0.06 [0.02; 0.10]

< 0.01

Type of school

 Private (137)

13.53 ± 4.05

12.61 ± 2.93

30.63 ± 6.42

56.76 ± 11.36

 Public (420)

14.25 ± 3.61

0.01 [− 0.1; 0.12]

0.85

12.93 ± 2.74

0.01 [− 0.06; 0.08]

0.79

31.04 ± 5.51

0.004 [− 0.04; 0.05]

0.86

58.23 ± 9.48

0.01 [− 0.06; 0.08]

0.76

Health insurance

 State aid (131)

13.15 ± 4.04

11.96 ± 3.06

29.48 ± 6.6

54.59 ± 11.16

 Basic insurance only (104)

13.85 ± 3.62

0.50 [− 0.03; 0.13]

0.24

12.67 ± 2.71

0.06 [− 0.002; 0.14]

0.058

31.30 ± 5.18

0.06 [0.006; 0.12]

0.03

57.82 ± 9.66

0.06 [0.004; 0.12]

0.04

 Private supplemental (304)

14.45 ± 3.56

0.72 [0.004; 0.14]

0.04

13.31 ± 2.58

0.1 [0.05; 0.16]

< 0.01

31.39 ± 5.53

0.06 [0.02; 0.10]

< 0.01

59.14 ± 9.34

0.07 [0.03; 0.12]

< 0.01

Toothbrushing

 No/occasional (46)

12.15 ± 3.63

11.87 ± 3.26

28.98 ± 6.93

53. ± 11.33

 Once a day (208)

13.64 ± 3.72

0.05 [− 0.04; 0.16]

0.29

12.43 ± 2.71

0.04 [− 0.38; 0.13]

0.27

30.54 ± 5.4

0.07 [0.03; 0.14]

0.04

56.61 ± 9.43

0.05 [− 0.02; 0.11]

0.18

 Twice a day (301)

14.67 ± 3.62

0.11 [0.007; 0.21]

0.03

13.30 ± 2.69

0.11 [0.02; 0.19]

0.01

31.52 ± 5.72

0.1 [0.04; 0.17]

< 0.01

59.49 ± 9.83

0.08 [0.01; 0.15]

0.02

DMFT

 DMFT = 0 (334)

14.70 ± 3.42

13.37 ± 2.39

31.68 ± 5.24

59.75 ± 8.66

 DMFT > 0 (223)

12.99 ± 3.93

− 0.11 [− 0.17; − 0.06]

< 0.01

12.10 ± 3.13

− 0.11 [− 0.15; − 0.06]

< 0.01

29.76 ± 6.38

− 0.06 [− 0.10; − 0.02]

< 0.01

54.85 ± 11.17

− 0.09 [− 0.12; − 0.05]

< 0.01

Gingival status

 No gingivitis (252)

14.21 ± 3.69

13.04 ± 2.74

31.21 ± 5.51

58.46 ± 9.67

 Gingivitis (> 1sextant) (303)

13.95 ± 3.75

− 0.05 [− 0.1; 0.1]

0.11

12.74 ± 2.79

− 0.44 [− 0.09; 0.003]

0.07

30.77 ± 5.92

− 0.01 [− 0.52; 0.02]

0.43

57.47 ± 10.16

− 0.03 [− 0.07; 0.003]

0.07

Infectious process

 No (511)

14.26 ± 3.57

13.06 ± 2.64

31.30 ± 5.48

58.62 ± 9.27

 At least one (44)

11.42 ± 4.45

− 0.26 [− 0.35; − 0.16]

< 0.01

10.77 ± 3.21

-0.2 [− 0.28; − 0.12]

< 0.01

26.93 ± 7.39

− 0.13 [− 0.19; − 0.06]

< 0.01

49.12 ± 13.24

− 0.2 [− 0.27; − 0.14]

< 0.01

Number of PFU

 < 6 (76)

14.29 ± 3.88

12.74 ± 2.81

30.3 ± 6.28

57.31 ± 10.76

 ≥ 6 (481)

14.04 ± 3.71

− 0.02 [− 0.08; 0.74]

0.96

12.87 ± 2.79

0.02 [− 0.04; 0.09]

0.52

31.05 ± 5.66

0.03 [− 0.17; 0.08]

0.18

57.96 ± 9.86

0.02 [− 0.03; 0.07]

0.40