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Table 2 Oral health-related quality of life (OHRQoL) differences [mean difference and prevalence ratios (PR) with corresponding 95% confidence limits (CL)] between participants with "low" (< 13 REALD-30; referent category) and "high" (≥ 13 REALD-30) oral health literacy in the Carolina Oral Health Literacy study (N = 1,278)

From: The relationship of oral health literacy with oral health-related quality of life in a multi-racial sample of low-income female caregivers

 

"Low" literacy

(< 13 REALD-30)

"High" literacy

(≥ 13 REALD-30)

Difference1 [mean (95% CL)]

Prevalence Ratio1 [(PR (95% CL)]

 

N = 316 (25%)

N = 962 (75%)

Crude

Adjusted 2

Adjusted2

OHRQoL

(OHIP-14 estimates)

     

Prevalence

45.3 (39.7, 50.8)

33.4 (30.4, 36.4)

11.9 (0.04, 0.20)

7.4 (-1.4, 16.2)

1.17 (1.00, 1.37)

Severity

12.4 (11.0, 13.8)

10.1 (9.4, 10.7)

2.3 (1.9, 2.8)

1.2 (0.7, 1.6)

1.11 (1.07, 1.16)

Extent

1.87 (1.52, 2.22)

1.19 (1.04, 1.33)

0.68 (0.52, 0.85)

0.36 (0.19, 0.54)

1.34 (1.20, 1.50)

  1. 1: Mean differences and ratios of OHIP-14 impacts were calculated using the "high literacy" category as referent.
  2. 2: Adjusted differences and ratios were obtained using a Poisson model controlling for race, age, education level and dental attendance.