Table 4 Crude and adjusted mortality rate ratios (MRR) associated with severity of obstruction according to different classification systems, by age.
Crude MRR | Adjusted1 MRR | |||
|---|---|---|---|---|
Age < 75 years | Age ≥ 75 years | Age < 75 years | Age ≥ 75 years | |
ATS | ||||
Mild obstruction | 1.97 (1.01-3.70) | 0.75 (0.43-1.25) | 1.70 (0.92-3.18) | 0.80 (0.48-1.33) |
Moderate/severe obstruction | 4.62 (2.78-7.76) | 1.71 (1.11-2.58) | 2.64 (1.49-4.68) | 1.31 (0.83-2.10) |
BTS | ||||
Mild obstruction | 3.62 (2.14-6.07) | 2.52 (1.50-4.25) | 1.28 (0.80-1.98) | 1.05 (0.66-1.68) |
Moderate/severe obstruction | 4.68 (2.53-8.41) | 2.83 (1.43-5.60) | 3.03 (1.73-5.06) | 2.01 (1.07-3.98) |
GOLD | ||||
Mild obstruction | 1.42 (0.52-3.34) | 0.97 (0.57-1.50) | 1.21 (0.51-2.87) | 0.98 (0.60-1.61) |
Moderate/severe obstruction | 4.22 (2.60-6.98) | 1.64 (1.09-2.47) | 2.67 (1.60-4.48) | 1.19 (0.77-1.85) |