Table 4.

Partial correlations: mood score and metabolite level when controlling for tumour burden in 17 patients with pancreatic adenocarcinoma

Control variable		Correlation with BDI score	Correlation with BAI score
Percentage of lymph nodes positive	Kynurenic acid : tryptophan ratio	P = 0.002, ρ = −0.711	P = 0.030, ρ = −0.543
Maximum tumour diameter	Kynurenic acid : tryptophan ratio	P = 0.006, ρ = −0.654	P = 0.350, ρ = −0.528

BDI, Beck Depression Inventory; BAI, Beck Anxiety Inventory.