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Table 5 Group characteristics of the network

From: Multiple Score Comparison: a network meta-analysis approach to comparison and external validation of prognostic scores

g Scores Cohortsa n d Q df τ
1 GOLD – ADO Copenhagen*, HUNT, Japan, SEPOC* 4323 378 2.8 3 0
2 GOLD – ADO – BODE – BODEupd Barmelweid*, Basque*, Galdakao†, Pamplona†, Zaragoza I† 1208 215 15.5 12 0.014
3 GOLD – GOLD (2011) – ADO – BODE – BODEupd Mar de Plata Argentina, PACECOPD*, Son Espases Mallorca 556 61 10.9 8 0.025
4 GOLD – GOLD (2011) – ADO – BODE – BODEupd – SAFE COPDgene 4484 337 7.46E-29 0 NA
5 GOLD – GOLD (2011) – ADO – BODEx – DOSE – BAED Genkols, ICE COLD ERIC, Initiatives BPCO, Sevilla†, Terrassa I†, Terrassa III†, Zaragoza II† 4346 722 48.1 30 0.011
6 GOLD – GOLD (2011) – ADO – BODE – BODEupd – eBODE – BODEx – DOSE – BAED La Princesa Madrid, Requena II†, Tenerife†, Terrassa II† 845 125 34.5 24 0.014
  1. Abbreviations: g group, n number of subjects, d number of deaths, Q likelihood ratio statistic, df degrees of freedom, τ heterogeneity within the group, GOLD Global initiative for chronic Obstructive Lung Disease, BODE Body mass index, airflow Obstruction, Dyspnoea and severe Exacerbations, BODE upd. BODE updated, ADO Age, Dyspnoea, airflow Obstruction (we use in the our analysis the updated version of the ADO score), e-BODE severe acute exacerbation of COPD plus BODE, BODEx Body mass index, airflow Obstruction, Dyspnoea, severe acute Exacerbation of COPD, DOSE Dyspnoea, Obstruction, Smoking and Exacerbation frequency, SAFE Saint George’s Respiratory Questionnaire (SGRQ) score, Air-Flow limitation and Exercise capacity, B-AE-D Body-mass index, Acute Exacerbations, Dyspnoea
  2. aCohorts belonging to the ADO or COCOMICS groups are marked with * or † respectively. We notice that for group 4 the value of heterogeneity τau is not available (NA); indeed, that is a singleton group, where we cannot evaluate heterogeneity