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3: Odds ratios of variables associated with identification of melanoma and with presentation with thick lesions

Odds ratio
(95% CI)
Likelihood ratio test
(chi-squared; df; P)
Variables associated with identification of melanoma
Age (years) <50 (reference group)1.00
Age (years) 500.66 (0.54-0.80)
22.5; 1; <0.001
Histological type NM (reference group)1.00
Histological type SSM0.88 (0.67-1.16)
Histological type LM0.52 (0.34-0.80)
13.67; 2; 0.001
Site: Back (reference group)1.00
Site: Scalp1.03 (0.50-2.11)
Site: Face1.99 (1.38-2.85)
Site: Neck1.34 (0.84-2.13)
Site: Arm1.61 (1.21-2.12)
Site: Anterior trunk2.13 (1.44-3.17)
Site: Leg1.82 (1.43-2.30)
35.00; 6; <0.001
Thickness <3mm (reference group)1.00
Thickness 3mm1.5 (1.0-2.2)
5.04; 1; 0.02
Variables associated with presentation with thick lesions
Age (years) <50 (reference group)1.00
Age (years) 503.46 (2.38-5.03)
64.3; 1; <0.0001
Histological type NM (reference group)1.00
Histological type SSM0.06 (0.04-0.08)
Histological type LM0.06 (0.03-0.13)
312.2; 2; <0.0001
No change noticed (reference group)1.00
Change noticed1.49 (1.03-2.14)
4.69; 1; 0.03

Differences were considered significant if confidence intervals did not overlap.
SSM=superficial spreading melanoma; NM=nodular melanoma; LM=lentigo maligna.

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