Table 4 Univariate and multiple Poisson analysis to evaluate the association of children scoring below Minimal Important Difference (MID) and change scores for differences among scores of the Early Childhood Oral health Impact Scale (ECOHIS) at the baseline and 30 days after finishing the dental treatment (outcome variables) and some independent variables (n = 152)

 Female

1.03

(0.75 to 1.41)

1.26

(0.97 to 1.63)

0.91

(0.77 to 1.09)

1.03

(0.98 to 1.08)

 5 to 6 years old

1.34

(0.96 to 1.86)

1.13

(0.86 to 1.47)

1.13

(0.95 to 1.35)

1.00

(0.95 to 1.06)

dmf-s (ref.: < 4)

^a

^a

 ≥ 4

3.72^*

(2.33 to 5.93)

1.85^*

(1.62 to 2.13)

 Restorative treatment

3.23^*

(1.52 to 6.88)

2.02^*

(1.03 to 3.96)

1.57^*

(1.30 to 1.90)

1.07

(0.99 to 1.16)

 Endodontic treatment /tooth extraction

4.29^*

(2.01 to 9.16)

2.15^*

(1.07 to 4.35)

1.87^*

(1.54 to 2.27)

1.13^*

(1.03 to 1.24)

 Improved a little

1.82

(0.64 to 5.14)

1.64

(0.73 to 3.68)

1.16

(0.80 to 1.67)

1.10

(0.93 to 1.31)

 Improved a lot

2.95^*

(1.21 to 7.21)

2.14^*

(1.05 to 4.38)

1.52^*

(1.11 to 2.09)

1.18

(1.00 to 1.38)

Total ECOHIS score at baseline (quant. var.)

1.07^*

(1.05 to 1.08)

1.06^*

(1.04 to 1.07)

1.05^*

(1.04 to 1.06)

1.05^*

(1.04 to 1.05)