Table 5 Univariate negative binomial regression coefficients (b) and their standard errors, for the summary quality of life score, according to categories of potential predictors*, among all participants (Weighted N = 1821)
Predictors | b | SE | p-value |
|---|---|---|---|
Age, years | 0.002 | 0.002 | 0.250 |
Gender | |||
Male vs. Female (ref.) | −0.236 | 0.052 | < 0.001 |
Level of education (WtN = 1817) | |||
None/basic | 0.343 | 0.080 | < 0.001 |
Middle/technical | 0.140 | 0.061 | 0.022 |
University (ref.) | – | – | – |
Smoking (WtN = 1818) | |||
Current | 0.251 | 0.062 | < 0.001 |
Past | −0.019 | 0.074 | 0.795 |
Never (ref.) | – | – | – |
Any diseases/conditions | |||
Yes vs. No (ref.) | 0.182 | 0.053 | 0.001 |
Diabetes | |||
Yes vs. No (ref.) | 0.266 | 0.010 | 0.007 |
Hypertension | |||
Yes vs. No (ref.) | 0.071 | 0.064 | 0.262 |
Number of missing teeth | 0.036 | 0.005 | < 0.001 |
Mean gingival index | 0.418 | 0.056 | < 0.001 |
Mean interproximal gingival index | 0.407 | 0.056 | < 0.001 |
Gingival bleeding at ≥ 40% of probing sites | |||
Yes vs. No (ref.) | 0.270 | 0.052 | < 0.001 |
Mean plaque index | 0.436 | 0.188 | 0.021 |
Mean interproximal plaque index | 0.240 | 0.188 | 0.203 |
Visible plaque index (plaque index ≥ 30%) | |||
Yes vs. No (ref.) | 0.184 | 0.186 | 0.323 |
Mean calculus index (WtN = 1819) | 0.206 | 0.072 | 0.005 |
Mean interproximal calculus index (WtN = 1819) | 0.202 | 0.074 | 0.007 |
Frequency of dental visits | |||
≥ Once per year (ref.) | – | – | – |
Never | 0.212 | 0.164 | 0.197 |
Only when there is a problem | 0.261 | 0.058 | < 0.001 |
Missing | 0.190 | 0.139 | 0.172 |
Frequency of tooth brushing (WtN = 1815) | |||
≥ Three times per day | −0.200 | 0.263 | 0.446 |
Twice per day | − 0.294 | 0.260 | 0.258 |
Once per day | − 0.126 | 0.268 | 0.648 |
< Once per day (ref.) | – | – | – |
Use of dental floss | |||
Yes vs. No (ref.) | −0.214 | 0.053 | < 0.001 |
Location | |||
Kingston | 0.143 | 0.064 | 0.026 |
Santo Domingo | 0.186 | 0.065 | 0.004 |
San Juan (ref.) | – | – | – |