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Table 3 Frequencies of patients who had at least one, two, or three gout diagnoses and who met the cutoffs of the different classification criteria

From: Validity of gout diagnosis in Swedish primary and secondary care - a validation study

Classification criteria sets Primary care group Rheumatology group
n = 262 n = 84 n = 27 n = 132 n = 83 n = 62
≥1 ICD-10 gout ≥2 ICD-10 gout ≥3 ICD-10 gout ≥1 ICD-10 gout ≥2 ICD-10 gout ≥3 ICD-10 gout
Rome, n 18 16 8 84 61 46
PPV% 7 19 30 64 73 74
95 % c.i. 4- 10 11-27 13 - 47 56 - 72 63 - 83 63 - 85
New York, n 9 7 3 80 57 44
PPV% 3 8 11 61 69 71
95% c.i. 1 - 5 2 - 14 0 - 22 53 - 69 59 - 79 60 - 82
ARA, n 54 45 19 90 65 51
PPV % 21 54 70 68 78 82
95% c.i. 16 - 26 43 - 65 53 - 87 60 - 76 69 - 87 72 - 92
Mexico, n 106 68 24 105 73 54
PPV% 40 81 89 80 88 87
95 % c.i. 34 - 46 73 - 89 77 - 101 73 - 87 81 - 95 79 - 95
Netherlands,n 110 67 24 94 63 43
PPV% 42 80 89 71 76 69
95 % c.i. 36 - 48 71 - 89 77 - 101 63 - 79 67 - 85 57 - 81
  1. Data in the table are the positive predictive values (PPVs) with the corresponding 95% confidence interval (ci)