Skip to main content

Table 1 Hypothetical example* of trends of odds ratio and prevalence ratio by social class (low versus high class)

From: Monitoring trends in socioeconomic health inequalities: it matters how you measure

 

Time 1

Time 2

 

Low class

High class

Low class

High class

Outcome prevalence (P)

0.75

0.60

0.60

0.43

Odds, P/(1-P)

3.00

1.50

1.50

0.75

OR†

2.00

1.99

PR‡

1.25

1.40

  1. OR = odds ratio; PR = prevalence ratio.
  2. * This example can be replicated when there is no other confounding variable.
  3. †OR (odds ratio) was calculated by Plow class/(1--Plow class) ÷ Phigh class/(1--P high class).
  4. ‡ PR (prevalence ratio) was calculated by Plowclass ÷ Phigh class.
Back to article page

BMC Public Health

ISSN: 1471-2458

Contact us