Table 3.
Weighted estimates from regression (zero-inflated poisson, logistic) to assess associations between Pampalon material deprivation index categories corresponding to provincial tertiles (highest deprivation and middle deprivation versus lowest deprivation) and oral health summary measures, grade 2 students in Calgary, 2009–10 and 2013/14
| Outcome variable | Rate ratio or odds ratio for effect of high or middle material deprivation (vs. low deprivation) on dental caries outcomes (reference = 1.0) | ||
|---|---|---|---|
| 2009/10 | 2013/14 | Interaction terms: RR or OR (95 % CI), p-value (n) | |
| RR or OR (95 % CI), p-value (n) | RR or OR (95 % CI), p-value (n) | ||
| defta | Highest deprivation: RR = 1.07 | Highest deprivation: RR = 1.19 | Year X Highest deprivation: RR = 1.11 |
| (0.93 to 1.23), p = .34 | (1.08 to 1.30), p < .001* | (0.95 to 1.30), p = .20 | |
| Middle deprivation: RR = 1.03 | Middle deprivation: RR = 1.15 | Year X Middle deprivation: RR = 1.12 | |
| (0.88 to 1.19), p = .73 (n = 511) | (1.02 to 1.30), p = .023* (n = 2980) | (0.91 to 1.37), p = .27 (n = 3491) | |
| DMFTa | Highest deprivation: RR = 1.42 | Highest deprivation: RR = 1.04 | Year X Highest deprivation: RR = 0.74 |
| (.74 to 2.69), p = .27 | (0.68 to 1.59), p = 0.85 | (0.36 to 1.50), p = 0.40 | |
| Middle deprivation: RR = 1.08 | Middle deprivation: RR = 0.80 | Year X Middle deprivation: RR = 0.74 | |
| (0.61 to 1.91), p = .77 (n = 505) | (0.49 to 1.30), p = 0.37 (n = 2939) | (0.36 to 1.51), p = 0.41 (n = 3444) | |
| 2 or more teeth (permanent or primary) with untreated decayb | Highest deprivation: OR = 2.95 | Highest deprivation: OR = 2.23 | Year X Highest deprivation: OR = 0.75 |
| (0.89 to 9.82), p = .07 | (1.66 to 2.98), p < .001* | (0.24 to 2.36), p = 0.63 | |
| Middle deprivation: OR = 0.90 | Middle deprivation: OR = 1.43 | Year X Middle deprivation: OR = 1.59 | |
| (0.31 to 2.62), p = .83 (n = 505) | (1.05 to 1.94), p = .024* (n = 2939) | (0.57 to 4.43), p = 0.37 (n = 3444) | |
deft number of decayed, missing, and filled primary teeth, DMFT number of decayed, missing, and filled permanent teeth, X multiplied by
*Statistically significant effect (at p < .05) of Pampalon material deprivation category (high or middle, versus low) on dental caries outcome
aZero-inflated Poisson regression
bLogistic regression (yes vs. no)