Table 2.

Validation parameters of COVID-19 Codes recorded in primary care clinical histories using as gold-standard SARS-CoV-2 lab positive test.

	N. Positive Covid test (gold-standard)	N. Covid Recorded in PC	N. in both sources (True positive)	N. recorded in PC without +test (% False positives)	N. Positive test without PC record	Sensitivity of PC records	Specificity of PC records	PPV of PC records	NPV of PC records	Missing in PC overall positive test (%)
Vaccinated	10,439	10,381	8,330	2,051 (19.76%)	2,109	79.80	99.95	80.24	99.94	20.20
<70	8,248	8,540	6,771	1,769 (20.71%)	1,477	82.09	99.94	79.29	99.95	17.91
≥70	2,191	1,841	1,559	282 (15.32%)	632	71.15	99.97	84.68	99.93	28.85
Unvaccinated	11,263	10,485	8,861	1,624 (15.49%)	2,402	78.67	99.96	84.51	99.94	21.33
<70	9,657	9,156	7,691	1,465 (16.00%)	1,966	79.64	99.95	84.00	99.93	20.36
≥70	1,606	1,329	1,170	159 (11.96%)	436	72.85	99.98	88.04	99.95	27.15