Table 2

Full model of the 2-level GEE logistic regression (nsubject = 261, Nmolar = 357)
Factors Estimation (S.E.) p-value* Odds ratio (OR#) 95% C.I. for OR
Lower Upper
Sealant (resin vs. ART sealant) 0.138 (0.613) 0.822 1.148 0.345 3.820
Age −0.216 (0.508) 0.607 0.770 0.285 2.084
Gender (boy vs. girl) −0.743 (0.678) 0.273 0.476 0.126 1.798
Candy snacking habit (<2 vs. ≥2daily) −0.073 (0.596) 0.903 1.075 0.335 3.456
Tooth brushing habit (<2 vs. ≥2daily) 1.213 (0.771) 0.115 3.363 0.743 15.231
Incipient caries at baseline (yes vs. no) 1.432 (0.646) 0.027 4.187 1.180 14.854
Molar location (lower vs. upper) 0.232 (0.702) 0.742 1.261 0.318 4.922
DIAGNOdent reading (16–39 vs. ≤15) 1.930 (1.029) 0.061 6.890 0.917 51.778
Sealant retention (0–4 half-year periods) −0.801 (0.188) <0.001 0.449 0.310 0.648
Group allocation combination - 0.544 - - -
-Sealant/SDF vs. sealant/sealant 0.701 (0.853) 0.411 2.015 0.379 10.714
-Sealant/NaFΦ vs. sealant/sealant 0.903 (0.818) 0.270 2.467 0.496 12.265
Intercept −2.304 (4.350) 0.596 0.100 0.000 504.044

#Odds Ratio (OR) is the ratio of the odds to develop dentine caries under two compared conditions. Silver diammine fluoride solution. ΦSodium fluoride varnish. *Statistical significance level is set at 0.05 and value of statistical significance is emphasized in bold.

Liu et al.

Liu et al. BMC Oral Health 2014 14:54   doi:10.1186/1472-6831-14-54

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