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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)

From: Association between gingival parameters and Oral health–related quality of life in Caribbean adults: a population-based cross-sectional study

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.)