Table 3. Predictive performance by...

Table 3.

Predictive performance by procurement category (100% negative ratio)

CPV	Description	AUC	Precision	Recall	F1-Score
33100	Medical equipment	0.989	0.983	0.811	0.888
33140	Medical consumables	0.982	0.975	0.754	0.850
33141	Medical imaging equipment	0.988	0.976	0.816	0.887
33600	Pharmaceutical products	0.971	0.934	0.747	0.826
33690	Various pharmaceutical products	0.986	0.964	0.720	0.820
34144	Medical devices	0.928	0.893	0.276	0.420
34300	Medical equipment, pharmaceuticals and personal care	0.979	0.961	0.699	0.799
45000	Construction work	0.943	0.924	0.323	0.470
45233	Construction work for bridges	0.950	0.847	0.377	0.517
60130	Special-purpose road passenger-transport services	0.926	0.757	0.225	0.344
66510	Insurance services	0.969	0.861	0.473	0.605
90500	Refuse and waste related services	0.962	0.867	0.620	0.721

CPV	Description	AUC	Precision	Recall	F1-Score
33100	Medical equipment	0.989	0.983	0.811	0.888
33140	Medical consumables	0.982	0.975	0.754	0.850
33141	Medical imaging equipment	0.988	0.976	0.816	0.887
33600	Pharmaceutical products	0.971	0.934	0.747	0.826
33690	Various pharmaceutical products	0.986	0.964	0.720	0.820
34144	Medical devices	0.928	0.893	0.276	0.420
34300	Medical equipment, pharmaceuticals and personal care	0.979	0.961	0.699	0.799
45000	Construction work	0.943	0.924	0.323	0.470
45233	Construction work for bridges	0.950	0.847	0.377	0.517
60130	Special-purpose road passenger-transport services	0.926	0.757	0.225	0.344
66510	Insurance services	0.969	0.861	0.473	0.605
90500	Refuse and waste related services	0.962	0.867	0.620	0.721

Note(s):

Values represent averages across four temporal validation periods (2018→2019, 2019→2020, 2020→2021, 2021→2022). High-performing medical/pharmaceutical categories exhibit both strong discrimination (AUC) and high coverage (recall), while construction and transport services show lower recall despite maintaining precision, indicating that structural features capture different proportions of procurement dynamics across domains

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