Table 5 Adjusted odds ratios (aOR), relative index of inequality (RII) and slope index of inequality (SII) of having had a Pap smear in the previous three years by age and socioeconomic position, 2001 and 2009 Taiwan National Health Interview Survey

Age group (years)

  30-39

1.00

1.00

  40-49

1.46

(1.26–1.70)

1.33

(1.14–1.55)

<.0001

  50–59

1.15

(0.95–1.38)

1.32

(1.10–1.59)

0.1413

  60–69

0.79

(0.64–0.97)

0.83

(0.66–1.05)

0.0272

  SII

-0.08

(-0.14––0.01)

0.01

(-0.07–0.08)

0.0257

  RII

0.93

(0.87–0.99)

1.01

(0.94–1.08)

0.0257

Urbanization level

  Metropolitan

1.00

1.00

  Urban

1.23

(0.84–1.79)

0.71

(0.52–0.98)

0.3422

  Suburban

1.75

(1.27–2.42)

1.20

(0.91–1.59)

0.0185

  Rural

1.87

(1.38–2.54)

1.33

(1.02–1.74)

0.0015

  SII

0.18

(0.10–0.27)

0.13

(0.04–0.21)

0.0001

  RII

1.20

(1.10–1.31)

1.14

(1.04–1.24)

0.0001

Education level

  Primary or lower

1.00

1.00

  Secondary

1.63

(1.36–1.96)

1.23

(0.99–1.51)

<.0001

  High school

1.68

(1.41–1.99)

1.32

(1.09–1.61)

<.0001

  College or university

1.38

(1.12–1.70)

1.00

(0.80–1.25)

0.0012

  SII

0.14

(0.07–0.21)

0.00

(-0.07–0.08)

<.0001

  RII

1.15

(1.08–1.23)

1.00

(0.93–1.08)

<.0001

Household monthly income (NT dollars)

  <=29,999

1.00

1.00

  30,000–49,999

1.57

(1.16–2.13)

1.08

(0.83–1.42)

0.0659

  50,000–69,999

1.71

(1.25–2.32)

1.34

(1.01–1.79)

0.0130

  70,000–99,999

1.65

(1.21–2.26)

2.06

(1.52–2.79)

0.0333

  > = 100,000

3.06

(2.10–4.45)

1.80

(1.29–2.52)

<.0001

  SII

0.15

(0.09–0.22)

0.21

(0.14–0.28)

<.0001

  RII

1.16

(1.09–1.24)

1.24

(1.16–1.32)

<.0001

Urbanization*Income

  Metropolitan, <=29,999

1.00

1.00

  Urban, 30,000–99,999

0.78

(0.51–1.19)

1.53

(1.05–2.23)

0.3309

  Urban, > = 100,000

0.55

(0.32–0.94)

1.32

(0.82–2.14)

0.5982

  Suburban & rural, 30,000–99,999

0.68

(0.48–0.96)

1.03

(0.75–1.42)

0.2475

  Suburban & rural, > = 100,000

0.31

(0.20–0.50)

1.03

(0.64–1.65)

0.0005