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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)

From: Responsiveness of the Early Childhood Oral Health Impact Scale (ECOHIS) is related to dental treatment complexity

Independent variables Children scoring below MID Change scores
Unadjusted RR Adjusted RR Unadjusted RS Adjusted RS
Sex (ref.: Male)
 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)
Age (ref.: 3 to 4 yrs. old)
 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)
 
Treatment need (ref.: only non-operative)
 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)
Global transition ratings (ref.: No change)
 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)
  1. dmf-s = Number of decayed, missed or filled surfaces of primary teeth
  2. MID = minimal important difference (Change scores ≥5)
  3. RR Relative risk, RS ECOHIS ratio scores. Figures in parenthesis ate 95% Confidence Intervals
  4. *Association statistically significant (p < 0.05)
  5. aVariable not included in the final multiple model