1[2 {"id":"C1","text":"15 of the 20 countries have a recorded life expectancy in every year 2000-2022 (AUS, AUT, BEL, CAN, DEU, ESP, FRA, GBR, ITA, JPN, KOR, NLD, SWE, TUR, USA); 5 are incomplete (BGD, CHE, ETH, IND, NGA).","results_keys":["n_countries_total","n_countries_balanced","n_countries_incomplete","balanced_countries","incomplete_countries"],"status":"supported","caveat":"CHE excluded for a single empty cell (2007)."},3 {"id":"C2","text":"The balanced-panel mean life expectancy rose from 78.060 years in 2000 to 81.553 years in 2022, a change of +3.493 years.","results_keys":["mean_2000_balanced","mean_2022_balanced","change_2000_2022_balanced"],"status":"supported","caveat":"Unweighted country mean over a predominantly high-income set; descriptive, no sampling uncertainty."},4 {"id":"C3","text":"The naive 2022 mean over all 20 countries with a 2022 value is 78.692 years, lower than the balanced 2022 mean because of composition.","results_keys":["mean_2022_all_available","n_countries_2022_all_available","mean_2022_balanced"],"status":"supported","caveat":"Baseline only, not the estimand; computed after removing the duplicate TUR rows."},5 {"id":"C4","text":"The analytic dataset has 345 country-years after removing 23 duplicate TUR rows, 1 empty cell and 70 rows of incomplete countries from 439 input rows.","results_keys":["n_analysed","n_input_rows","data_issues"],"status":"supported","caveat":""},6 {"id":"C5","text":"The balanced mean peaked at 82.073 in 2019, dropped to 81.320 in 2020, and remained below the 2019 level in 2022.","results_keys":["balanced_mean_by_year"],"status":"supported","caveat":"Descriptive."}7]8