Independent factors

Univariate analysis

Multivariate analysis

p

HR (95%CI)

p

aHR (95%CI)

Socioeconomic level

High

1

1

Moderate

<0.001

3.13 (2.58 - 5.15)

<0.001

3.64 (2.00 - 5.01)

Low

<0.001

6.33 (3.79 - 10.55)

<0.001

6.04 (3.60 - 10.13)

Head

No

1

1

Yes

0.001

1.63 (1.21 - 2.21)

0.005

1.56 (1.14 - 2.13)

Neck

No

1

1

Yes

0.009

1.57 (1.12 - 2.21)

0.054

1.41 (0.99 - 2.00)

Thorax

No

1

1

Yes

<0.001

2.12 (1.56 - 2.89)

<0.001

2.98 (2.15 - 4.13)

Abdomen

No

1

1

Yes

<0.001

2.61 (1.91 - 3.58)

<0.001

1.93 (1.39 - 2.68)