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Table 3 Adjusted multinomial analysis of the stages of change for physical activity according to the covariates§. Pelotas, Brazil, 2005.

From: Stages of change for physical activity in adults from Southern Brazil: a population-based survey

Level

Variable

Contemplation PR (95%CI)

Preparation PR (95%CI)

Action PR (95%CI)

Maintenance PR (95%CI)

1

Sex

p = 0.001*

p = 0.006*

p = 0.006*

p < 0.001*

 

   Male

0.69 (0.55–0.86)

0.75 (0.61–0.92)

0.60 (0.42–0.86)

1.51 (1.27–1.80)

 

   Female

1.00

1.00

1.00

1.00

1

Skin color

p = 0.121*

p = 0.077*

p = 0.056*

p = 0.105*

 

   White

1.38 (0.92–2.06)

1.33 (0.97–1.83)

1.68 (0.99–1.85)

1.28 (0.95–1.72)

 

   Non-white

1.00

1.00

1.00

1.00

1

Age (years)

p < 0.001**

p < 0.001**

p < 0.001**

p = 0.016**

 

   20–39

2.73 (1.84–4.05)

2.01 (1.47–2.76)

3.89 (2.14–7.09)

1.39 (1.05–1.85)

 

   40–59

1.58 (1.08–2.32)

1.68 (1.25–2.26)

1.45 (0.78–2.70)

1.13 (0.87–1.47)

 

   ≥ 60

1.00

1.00

1.00

1.00

1

Marital status

p = 0.033*

p = 0.060*

p = 0.018*

p = 0.001*

 

   Without a partner

1.24 (1.02–1.51)

1.23 (0.99–1.52)

1.53 (1.08–2.17)

1.45 (1.17–1.78)

 

   With a partner

1.00

1.00

1.00

1.00

2

Education level (years)

p < 0.001**

p < 0.001**

p < 0.001**

p < 0.001**

 

   0–4

1.00

1.00

1.00

1.00

 

   5–8

1.13 (0.83–1.53)

1.47 (1.08–2.01)

1.51 (0.78–2.89)

1.13 (0.86–1.48)

 

   9–11

1.99 (1.39–2.86)

2.54 (1.73–3.71)

2.23 (1.17–4.23)

2.61 (1.89–3.61)

 

   ≥ 12

2.72 (1.68–4.41)

4.02 (2.58–6.26)

3.30 (1.59–6.84)

3.99 (2.61–6.10)

2

Economic status†

p = 0.248**

p = 0.004**

p < 0.001**

p = 0.246**

 

   A/B (wealthiest)

1.35 (0.85–2.15)

1.71 (1.19–2.46)

3.14 (1.79–5.51)

1.29 (0.85–1.96)

 

   C

0.96 (0.65–1.42)

1.06 (0.78–1.44)

1.32 (0.80–2.18)

1.03 (0.77–1.39)

 

   D/E

1.00

1.00

1.00

1.00

2

Family income (quintiles)

p = 0.004**

p = 0.305**

p = 0.949**

p < 0.001**

 

   1 (lower)

1.00

1.00

1.00

1.00

 

   2

1.17 (0.80–1.72)

1.21 (0.89–1.65)

0.60 (0.32–1.12)

1.02 (0.73–1.40)

 

   3

1.84 (1.28–2.64)

1.19 (0.83–1.71)

0.69 (0.35–1.36)

1.44 (1.01–2.05)

 

   4

1.54 (1.00–2.38)

1.18 (0.78–1.78)

0.75 (0.38–1.48)

1.39 (0.97–1.99)

 

   5

1.97 (1.21–3.23)

1.31 (0.983–2.07)

0.94 (0.43–2.05)

1.84 (1.29–2.64)

3

Smoking

p = 0.760*

p = 0.034*

p = 0.449*

p < 0.001*

 

   Non-smoker

1.09 (0.81–1.47)

1.32 (1.01–1.71)

1.36 (0.84–2.20)

1.68 (1.28–2.20)

 

   Former smoker

1.15 (0.78–1.70)

1.51 (1.10–2.09)

1.26 (0.68–2.33)

1.89 (1.38–2.59)

 

   Current smoker

1.00

1.00

1.00

1.00

3

BMI (kg/m2)‡

p < 0.001**

p < 0.001**

p = 0.039**

p = 0.396**

 

   < 25.0

0.54 (0.37–0.79)

0.53 (0.37–0.76)

0.52 (0.29–0.95)

0.93 (0.66–1.32)

 

   25.0 a 29.9

0.85 (0.59–1.23)

0.78 (0.57–1.07)

0.65 (0.37–1.12)

1.11 (0.79–1.56)

 

   ≥ 30.0

1.00

1.00

1.00

1.00

4

Self-reported health status

p = 0.089**

p = 0.923**

p = 0.679**

p = 0.001**

 

   Excellent/very good

0.76 (0.54–1.06)

1.02 (0.73–1.44)

1.08 (0.66–1.75)

1.71 (1.25–2.34)

 

   Good

0.72 (0.53–0.98)

0.91 (0.68–1.23)

0.83 (0.51–1.36)

1.13 (0.88–1.45)

 

   Regular/poor

1.00

1.00

1.00

1.00

  1. § Precontemplation stage is the base-outcome.
  2. † Criterion of Brazilian Economic Classification [17].
  3. ‡ BMI had 3.3% of missing values; the other variables had less than 1%.
  4. * Wald test for heterogeneity.
  5. ** Wald test for linear trend.