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Table 2 Weighted* multivariate logistic regression (Odds Ratio, OR, and 95% confidence interval, 95% CI) models.

From: Body piercing and tattoo: awareness of health related risks among 4,277 Italian secondary school adolescents

INDEPENDENT

VARIABLES

 

OUTCOME VARIABLES

  

(1)

OR (95% CI)

(2)

OR (95% CI)

(3)

OR (95% CI)

(4)

OR (95% CI)

Gender

Female

Reference

Reference

Reference

Reference

 

Male

0.78 (0.66, 0.94)

0.54 (0.44, 0.65)

0.56 (0.48, 0.66)

0.71 (0.59, 0.86)

Age

<16 years

   

Reference

 

17-18 years

   

1.01 (0.60, 1.72)

 

19+ years

   

0.57 (0.28, 1.16)

School year

1st

Reference

Reference

Reference

Reference

 

3rd

1.89 (2.54, 3.79)

1.54 (1.27, 1.87)

1.32 (1.11, 1.57)

1.03 (0.61, 1.74)

 

5th

3.10 (2.54, 3.79)

2.29 (1.84, 2.85)

1.70 (1.41, 2.04)

1.99 (0.97, 4.08)

Province of residence

Belluno

Reference

Reference

Reference

Reference

 

Verona

1.03 (0.77, 1.37)

0.76 (0.55, 1.04)

1.30 (0.98, 1.72)

1.04 (0.76, 1.41)

 

Vicenza

0.82 (0.59, 1.16)

0.61 (0.43, 0.87)

0.54 (0.40, 0.73)

0.90 (0.64, 1.28)

 

Padua

0.90 (0.68, 1.19)

0.92 (0.67, 1.26)

1.02 (0.78, 1.33)

1.07 (0.79, 1.45)

 

Venice

0.91 (0.67, 1.23)

0.76 (0.54, 1.06)

1.06 (0.79, 1.41)

1.07 (0.77, 1.47)

 

Treviso

0.91 (0.68, 1.22)

1.24 (0.88, 1.74)

1.00 (0.76, 1.33)

0.83 (061, 1.12)

 

Rovigo

0.63 (0.47, 0.85)

0.73 (0.54, 1.01)

0.84 (0.64, 1.10)

0.69 (0.51, 0.93)

No. of siblings

0

 

Reference

Reference

 
 

1

 

0.82 (0.65, 1.03)

0.87 (0.72, 1.06)

 
 

2+

 

0.63 (0.48, 0.82)

0.79 (0.63, 0.99)

 

Tattoo

Indifferent/not interested

Reference

 

Reference

Reference

 

Interested/keen to try

0.88 (0.73, 1.05)

 

1.11 (0.94, 1.32)

1.07 (0.88, 1.28)

 

Done

0.60 (0.42, 0.86)

 

1.02 (0.72, 1.43)

0.68 (0.48, 0.95)

Piercing

Indifferent/not interested

Reference

 

Reference

Reference

 

Interested/keen to try

0.91 (0.74, 1.12)

 

0.82 (0.67, 0.99)

0.86 (0.69, 1.07)

 

Done

1.03 (0.81, 1.30)

 

0.62 (0.50, 0.77)

0.37 (0.29, 0.46)

  1. (1) = Knowledge of infectious disease risk. Model fitted on 2,678 complete observations
  2. (2) = Knowledge of hygienic norms mandatory in tattoo parlours. Model fitted on 3,093 complete observations
  3. (3) = Propensity to refer to a certified parlour to undergo body art. Model fitted on 3,341 complete observations
  4. (4) = Propensity to seek medical advice in the event of complications related to body art. Model fitted on 3,341 complete observations
  5. * ORs weighted for sex and age to make the results more representative of the adolescents of the Veneto Region aged 14 to 22 years
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