[
 {"id":"C1","text":"Among the 15 countries with complete 2000-2022 data, unweighted mean life expectancy rose from 78.06 years in 2000 to 81.55 years in 2022, an increase of about 3.49 years.","results_keys":["mean_2000_balanced","mean_2022_balanced","change_2000_2022_balanced","n_countries_balanced"],"status":"supported","caveat":"Unweighted mean over a mostly high-income set; not representative of the 20 countries or the world."},
 {"id":"C2","text":"5 of 20 countries were excluded from the balanced set: CHE (missing 2007) and BGD, ETH, IND, NGA (no rows for 2000-2010).","results_keys":["n_countries_total","n_countries_incomplete","balanced_countries","data_issues"],"status":"supported","caveat":"Missingness may be an assembly artefact rather than a true gap in the source; no imputation was done, per the task rules."},
 {"id":"C3","text":"Türkiye appeared twice (as 'Turkey' and 'Turkiye') with identical values; it was deduplicated by iso3, giving a 345-row balanced analytic dataset.","results_keys":["n_analysed","n_input_rows","data_issues"],"status":"supported","caveat":"Deduplication does not change any value because the duplicates were identical."},
 {"id":"C4","text":"The naive 2022 mean over all 20 countries with a 2022 value is 78.69 years, about 2.9 years below the balanced 2022 mean, because of the composition difference.","results_keys":["mean_2022_all_available","mean_2022_balanced"],"status":"supported","caveat":"Descriptive baseline only; it is not comparable with the 2000 balanced mean."}
]