Table 5 Concordance coefficient of obstructive lung staging in non-Korean equations and in Choi's equation
From: Discordance in Spirometric Interpretations Based on Korean and Non-Korean Reference Equations
Ages | Obstructive lung disease staging¶ | Choi | NHANES III | Knudson | Morris | |||
|---|---|---|---|---|---|---|---|---|
n (%) | n (%) | Agreement with Choi | n (%) | Agreement with Choi | n (%) | Agreement with Choi | ||
20-39 | mild | 6 (2.0) | 7 (2.3) | 6 (100) | 8 (2.7) | 6 (100) | 12 (4.0) | 6 (100) |
moderate | 7 (2.3) | 6 (2.0) | 6 (85.7) | 5 (1.7) | 5 (71.4) | 1 (0.3) | 1 (14.3) | |
Kappa | 0.960† | 0.920† | 0.762† | |||||
40-49 | mild | 18 (7.8) | 18 (7.8) | 18 (100) | 20 (8.6) | 18 (100) | 21 (9.1) | 18 (100) |
moderate | 3 (1.3) | 3 (1.3) | 3 (100) | 1 (0.4) | 1 (33.3) | 0 (0.0) | 0 (0.0) | |
Kappa | 1.000† | 0.948† | -* | |||||
≥ 50 | mild | 48 (16.3) | 60 (20.4) | 48 (100) | 67 (22.8) | 48 (100) | 81 (27.6) | 48 (100) |
moderate | 39 (13.3) | 27 (9.2) | 27 (69.2) | 20 (6.8) | 20 (51.3) | 6 (2.0) | 6 (15.4) | |
Kappa | 0.911† | 0.859† | 0.754† | |||||
Total | mild | 72 (8.7) | 85 (10.3) | 72 (100) | 95 (11.5) | 72 (100) | 114 (13.8) | 72 (100) |
moderate | 49 (5.9) | 36 (4.4) | 36 (73.5) | 26 (3.2) | 26 (53.1) | 7 (0.8) | 7 (14.3) | |
Kappa | 0.939† | 0.893† | 0.804† | |||||