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. 2023 Mar 22;32(167):220116. doi: 10.1183/16000617.0116-2022

TABLE 2.

Selected features associated with 2-year survival derived from patients with COPD

Feature Frequency 2-year survival Cohort's median age, years
BODE score >7 82/469 (17%) [10],
139/625(23%) [11]		 75% [11], 70% [11] 64 [10], 66 [11]
Resting hypoxaemia (PO2 ≤55 mmHg) 81/175 LTx referrals (46%) [12] 50% (COPD) to 70% (α-1 AD) [13] 56 [12], 63–73 [13]
Hypoxaemia on exertion (SpO2 <88%) without resting hypoxaemia 33/173 (19% in patient using oxygen) [14] 80% [15, 16] 56 [14], 68 [16]
Home noninvasive ventilation 147/402 LTx referrals(36%) [12] 65% [17, 18] 65 [17], 67 [18]
Exacerbation with hypercapnia 325/4343 (7%) [19, 20] 51% [21], 35% [22], 47% [23] 59 [21], 69 [22], 63 [23], 70 [19, 20]
≥1 exacerbation with hospitalisation 105/304 (34%) [24] 70% [24] 69 [24]
FEV1 <20% 69/1033 (7%) [25] 80% [25] 63 [25]
Mean pulmonary artery pressure ≥35 mmHg 16/409 (4%) [26],
44/4305 (6%) [27]		 70% [26], 58% [27] 54 [26], 59 [27]

BODE: body mass index, obstruction, dyspnoea and exercise capacity score; PO2: oxygen tension; SpO2: peripheral oxygen saturation; FEV1: forced expiratory volume in 1 s; LTx: lung transplantation; α-1 AD: α-1 antitrypsin deficiency.