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Table 1 Means and CIs of numerical frequencies corresponding to the ordinal OHIP response categories (#1 - #4) and one OHIP point (#5); results of multi-level regression models with crossed random factors “patients” and “items” (random-effects parameters not presented)

From: Interpreting one oral health impact profile point

Model

Variable

Coefficient

95% CI

P value

# 1

   
 

'Hardly ever'

9.1

(7.1 – 11.0)

< 0.001

# 2

   
 

'Occasionally'

19.4

(16.1 – 22.7)

< 0.001

# 3

   
 

'Often'

43.0

(37.0 – 49.0)

< 0.001

# 4

   
 

'Very often'

70.1

(61.6 – 78.6)

< 0.001

# 5

   
 

One OHIP point

15.2

(14.8 – 15.7)

< 0.001

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Health and Quality of Life Outcomes

ISSN: 1477-7525

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