Table 6. Vitamin D status (lower quartile [<45.3 nmol/L], <50 nmol/L, upper quartile [≥69.8 nmol/L]) at time of diagnosis, in relation to Clark level (Levels 2–5 vs. Level 1).

Vitamin D status	Crude OR	95% CI	P-value	Adjusted OR a	95% CI	P-value
≥45.3 nmol/L	Reference			Reference
<45.3 nmol/L	1.64	0.64, 4.18	0.30	1.28	0.38, 4.33	0.69
≥50 nmol/L	Reference			Reference
<50 nmol/L	1.77	0.76, 4.11	0.19	1.83	0.62, 5.44	0.27
≥69.8 nmol/L	Reference			Reference
<69.8 nmol/L	2.05	0.81, 5.23	0.13	1.56	0.48, 5.12	0.46

^a Adjusted for age, sex, season at diagnosis, ITA value, supplements, BMI, naevi burden at diagnosis, primary school sunburns