Table 3

Positive predictive values of cardiovascular diagnoses in the Danish National Patient Registry, by calendar year and type of hospital

201020112012University hospitalRegional hospital
Confirmed diagnoses/available recordsPositive predictive value, % (95% CI)Confirmed diagnoses/available recordsPositive predictive value, % (95% CI)Confirmed diagnoses/available recordsPositive predictive value, % (95% CI)Confirmed diagnoses/available recordsPositive predictive value, % (95% CI)Confirmed diagnoses/available recordsPositive predictive value, % (95% CI)
Myocardial infarction
 First-time myocardial infarction34/3597 (85 to 99)28/2997 (83 to 99)34/3597 (85 to 99)59/6197 (89 to 99)37/3897 (87 to 100)
 Recurrent myocardial infarction28/3385 (69 to 93)35/3892 (79 to 97)25/2986 (69 to 95)47/5192 (82 to 97)41/4984 (71 to 91)
 Stent thrombosis6/6100 (61 to 100)7/978 (45 to 94)9/9100 (70 to 100)20/2195 (77 to 99)2/367 (21 to 94)
Angina pectoris
 Stable angina pectoris32/3591 (78 to 97)27/2993 (78 to 98)30/3294 (80 to 98)63/6893 (84 to 97)26/2893 (77 to 98)
 Unstable angina pectoris26/2990 (74 to 96)31/3686 (71 to 94)27/3187 (71 to 95)40/4687 (74 to 94)44/5088 (76 to 94)
Heart failure
 First-time heart failure25/3181 (64 to 91)27/3871 (55 to 83)20/2677 (58 to 89)29/4073 (57 to 84)43/5578 (66 to 87)
 Readmission for heart failure21/2875 (57 to 87)30/3879 (64 to 89)22/3073 (56 to 86)27/3773 (57 to 85)46/5978 (66 to 87)
Cardiomyopathy
 Cardiomyopathy overall22/2588 (70 to 96)22/2492 (74 to 98)36/4090 (77 to 96)61/6692 (83 to 97)19/2383 (63 to 93)
 Dilated cardiomyopathy1/250 (9 to 91)6/786 (49 to 97)8/1172 (43 to 90)6/875 (41 to 93)9/1275 (47 to 91)
 Hypertrophic cardiomyopathy4/580 (38 to 96)5/5100 (57 to 100)9/1090 (60 to 98)11/1292 (65 to 99)7/888 (53 to 98)
 Restrictive cardiomyopathy3/475 (30 to 95)1/250 (9 to 91)3/3100 (44 to 100)7/978 (45 to 94)0/0N/A
 Arrhythmogenic right ventricular cardiomyopathy8/8100 (68 to 100)7/7100 (65 to 100)5/5100 (57 to 100)20/20100 (84 to 100)0/0N/A
 Takotsubo cardiomyopathy6/6100 (61 to 100)3/3100 (44 to 100)11/11100 (74 to 100)17/17100 (82 to 100)3/3100 (44 to 100)
Hypertension
 Arterial hypertension14/1593 (70 to 99)39/4391 (78 to 96)36/3992 (80 to 97)35/4185 (72 to 93)54/5696 (88 to 99)
 Pulmonary hypertension24/2886 (69 to 94)26/3184 (67 to 93)37/4190 (77 to 96)49/6082 (70 to 89)38/4095 (84 to 99)
Cardiac arrhythmias
 Atrial fibrillation or flutter27/2993 (78 to 98)30/3294 (80 to 98)35/3697 (86 to 100)30/3391 (76 to 97)62/6497 (89 to 99)
 Bradycardia24/2692 (76 to 98)28/3580 (64 to 90)35/3990 (76 to 96)61/7186 (76 to 92)26/2990 (74 to 96)
 Ventricular tachycardia or fibrillation23/3077 (59 to 88)21/2778 (59 to 89)33/3985 (70 to 93)49/6378 (66 to 86)28/3385 (69 to 93)
 Cardiac arrest29/3291 (76 to 97)26/26100 (87 to 100)39/4293 (81 to 98)72/7596 (89 to 99)22/2588 (70 to 96)
Valvular heart disease
 Mitral regurgitation or stenosis9/1090 (60 to 98)15/1694 (72 to 99)23/23100 (86 to 100)30/3294 (80 to 98)17/17100 (82 to 100)
 Aortic regurgitation or stenosis13/13100 (77 to 100)16/16100 (81 to 100)20/2195 (77 to 99)29/29100 (88 to 100)20/2195 (77 to 99)
Inflammation/infection
 Endocarditis25/2986 (69 to 95)26/2990 (74 to 96)28/3874 (58 to 85)49/5983 (72 to 91)30/3781 (66 to 91)
 Myocarditis14/2167 (45 to 83)14/2458 (39 to 76)14/2167 (45 to 83)33/4967 (53 to 79)9/1753 (31 to 74)
 Pericarditis31/3686 (71 to 94)30/3197 (84 to 99)29/3193 (79 to 98)60/6790 (80 to 95)30/3197 (84 to 99)
Aortic diseases
 Aortic dissection11/1479 (52 to 92)16/16100 (81 to 100)19/2095 (76 to 99)32/3689 (75 to 96)14/14100 (78 to 100)
 Aortic aneurysm/dilation13/13100 (77 to 100)23/23100 (86 to 100)14/14100 (78 to 100)36/36100 (90 to 100)14/14100 (78 to 100)
Venous thromboembolism
 First-time venous thromboembolism25/2889 (73 to 96)30/3391 (76 to 97)32/3884 (70 to 93)28/3482 (66 to 92)59/6591 (81 to 96)
 First-time deep venous thrombosis13/1587 (62 to 96)13/1493 (69 to 99)17/2181 (60 to 92)13/1681 (57 to 93)30/3488 (73 to 95)
 First-time pulmonary embolism12/1392 (67 to 99)17/1989 (69 to 97)15/1788 (66 to 97)15/1883 (61 to 94)29/3194 (79 to 98)
 Recurrent venous thromboembolism22/2781 (63 to 92)20/2969 (51 to 83)25/3768 (51 to 80)25/3964 (48 to 77)42/5478 (65 to 87)
 Recurrent deep venous thrombosis9/1182 (52 to 95)9/1369 (42 to 87)11/1573 (48 to 89)6/1060 (31 to 83)23/2979 (62 to 90)
 Recurrent pulmonary embolism13/1681 (57 to 93)11/1669 (44 to 86)14/2264 (43 to 80)19/2966 (47 to 80)19/2576 (57 to 89)
Other
 Arterial claudication18/2090 (70 to 97)33/3789 (75 to 96)37/4093 (80 to 97)86/9591 (83 to 95)2/2100 (34 to 100)
 Hypercholesterolaemia27/3090 (74 to 97)30/3197 (84 to 99)33/33100 (90 to 100)48/5194 (84 to 98)42/4398 (88 to 100)
 Cardiac tumours2/367 (21 to 94)9/1182 (52 to 95)11/1292 (65 to 99)17/1894 (74 to 99)5/863 (31 to 86)