Table 4 Multinomial logistic regression assesses the influence of sex, nationality, and age on the number and categories of treatments that were not performed

Conservative treatment

Sex (reference: woman)

 Men

− 0.39

(− 1.09 to 0.31)

Nationality (reference: Spanish)

 Foreign

0.03

(− 1.28 to 1.35)

Age range (reference: 18–24)

 25–34

− 0.43

(− 1.91 to 1.05)

 35–44

− 0.11

(− 1.35 to 1.14)

 45–54

.1.08

(− 2.32 to 0.17)

 55–64

− 0.79

(− 2.14 to 0.58)

 65–74

0.27

(− 1.02 to 1.57)

 75–84

− 0.88

(− 2.76 to 0.99)

 ≥ 85

− 21.21

(− 56,048.49 to 56,006.08)

Prosthetic treatment

Sex (reference: woman)

 Men

− 0.86

(− 1.72−  − 0.14)

Nationality (reference: Spanish)

 Foreign

0.31

(− 1.31 to 1.92)

Age range (reference: 18–24)

 25–34

0.75

(− 1.33 to 2.84)

 35–44

− 0.53

(− 2.75 to 1.70)

 45–54

0.72

(− 1.09 to 2.52)

 55–64

1.02

(− 0.88 to 2.92)

 65–74

1.44

(− 0.46 to 3.33)

 75–84

1.90

(− 0.22 to 4.02)

 ≥ 85

− 19.67

(− 79,254.22 to 79,214.88)

Periodontal treatment

Sex (reference: woman)

 Men

− 0.24

(− 1.02 to 0.54)

Nationality (reference: Spanish)

 Foreign

− 1.10

(− 3.36 to 1.16)

Age range (reference: 18–24)

 25–34

0.85

(− 1.23 to 2.93)

 35–44

− 0.45

(− 2.67 to 1.77)

 45–54

1.15

(− 0.62 to 2.91)

 55–64

1.32

(− 0.53 to 3.17)

 65–74

1.62

(− 0.23 to 3.47)

 75–84

1.51

(− 0.64 to 3.66)

 ≥ 85

− 19.93

(− 72,214.24 to 72,174.39)

Conservative and prosthetic treatments

Sex (reference: woman)

 Men

0.45

(− 0.59 to 1.50)

Nationality (reference: Spanish)

 Foreign

− 0.52

(− 2.80 to 1.77)

Age range (reference: 18–24)

 25–34

0.24

(− 2.78 to 3.26)

 35–44

1.44

(− 0.92 to 3.81)

 45–54

1.01

(− 1.32 to 3.35)

 55–64

0.43

(− 2.20 to 3.06)

 65–74

1.22

(− 1.24 to 3.67)

 75–84

0.69

(− 2.42 to 3.80)

 ≥ 85

− 20.35

(− 114,711.9 to 114,671.2)

Conservative and periodontal treatments

Sex (reference: woman)

 Men

− 0.46

(− 1.16 to 0.23)

Nationality (reference: Spanish)

 Foreign

0.31

(− 0.97 to 1.60)

Age range (reference: 18–24)

 25–34

0.81

(− 0.80 to 2.42)

 35–44

0.56

(− 0.90 to 2.02)

 45–54

0.57

(− 0.81 to 1.94)

 55–64

0.72

(− 0.77 to 2.20)

 65–74

1.24

(− 0.24 to 2.72)

 75–84

0.87

(− 0.97 to 2.71)

 ≥ 85

− 20.07

(− 55,116.09 to 55,075.95)

Periodontal and prosthetic treatments

Sex (reference: woman)

 Men

− 1.30

(− 2.77 to 0.16)

Nationality (reference: Spanish)

 Foreign

1.79

(− 0.22 to 3.81)

Age range (reference: 18–24)

 25–34

0.28

(− 3872.69 to 3873.24)

 35–44

14.10

(− 2953.32 to 2981.52)

 45–54

14.10

(− 2952.49 to 2982.34)

 55–64

16.02

(− 2951.39 to 2983.44)

 65–74

15.58

(− 2951.83 to 2982.10)

 75–84

16.29

(− 2951.13 to 2983.71)

 ≥ 85

− 4.89

(− 151,756.5 to 15,146.7)

Periodontal, prosthetic and conservative treatments

Sex (reference: woman)

 Men

− 0.18

(− 1.09 to 0.74)

Nationality (reference: Spanish)

 Foreign

0.06

(− 1.75 to 1.87)

Age range (reference: 18–24)

 25–34

14.25

(− 2240.94 to 2269.45)

 35–44

15.74

(− 2239.45 to 2270.94)

 45–54

15.16

(− 2240.03 to 2270.36)

 55–64

15.18

(− 2240.02 to 2270.37)

 65–74

15.55

(− 2239.65 to 2270.74)

 75–84

16.39

(− 2238.81 to 2271.58)

 ≥ 85

− 5.63

(− 95,989.93 to 95,978.67)