As a clinical trial statistician or programmer, challenge anything in this benchmark: describe a problem in Comments, or propose a fix with the Edit button on any source file.
- Task: Would a real study need this derivation, specified this way? Does it follow CDISC ADaM: variable names, controlled terms, record structure? Flag any rule that is ambiguous or that a sponsor would handle differently.
- Inputs: Do they look like data collected in a real trial, and do they include the situations you would expect to meet in one?
- Expected output: Would independent QC programming reproduce every value from these inputs and rules?
The other tabs beside Comments are background for assessment, not under review.
Summary
README.mdGoal: give each subject a normalized country in COUNTRY
and its region in REGION1.
Input: demographics (DM) rows carrying the collected country
(COUNTRY) as reported, in mixed case or empty, including a country
outside the three listed below.
Variables:
COUNTRYis the collected country from demographics in upper case; a subject with no collected country isUNKNOWN. Every collected country passes through: there is no allowed-countries check, so the run never stops on a new country.REGION1is the region for that country:USAandCANgiveNorth America,DEUgivesEurope, and any other country (includingUNKNOWN) givesRest of World.
Note: case differences never split a country (usa and USA
are one), and the fallback values mean every subject has both a
country and a region.
Inputs
Under review1 source fileinput/dm.csv
Edit9 rows| STUDYID | USUBJID | COUNTRY |
|---|---|---|
| YAMAA-01 | usa | |
| YAMAA-01 | CAN | |
| YAMAA-01 | deu | |
| YAMAA-01 | — | |
| YAMAA-01 | UsA | |
| YAMAA-01 | cAn | |
| YAMAA-01 | unknown | |
| YAMAA-01 | — | |
| YAMAA-01 | fra |
Expected output
Under review9 expected rowsexpected/adsl.csv
Edit9 rows| STUDYID | USUBJID | COUNTRY | REGION1 |
|---|---|---|---|
| YAMAA-01 | USA | North America | |
| YAMAA-01 | CAN | North America | |
| YAMAA-01 | DEU | Europe | |
| YAMAA-01 | UNKNOWN | Rest of World | |
| YAMAA-01 | USA | North America | |
| YAMAA-01 | CAN | North America | |
| YAMAA-01 | UNKNOWN | Rest of World | |
| YAMAA-01 | UNKNOWN | Rest of World | |
| YAMAA-01 | FRA | Rest of World |
Comments and assessment materials
| Dataset Name | Variable Name | Variable Label | Type | Codelist/Controlled Terms | Core | Computational Method | Origin |
|---|---|---|---|---|---|---|---|
| ADSL | STUDYID | Study Identifier | character | Copy value from DM.STUDYID. | Predecessor | ||
| ADSL | USUBJID | Unique Subject Identifier | character | Copy value from DM.USUBJID. | Predecessor | ||
| ADSL | COUNTRY | Country | character | Convert DM.COUNTRY to upper case; a missing source → "UNKNOWN". | Derived | ||
| ADSL | REGION1 | Geographic Region 1 | character | North America, Europe, Rest of World | Recode COUNTRY: "USA" → "North America", "CAN" → "North America", "DEU" → "Europe"; missing or unlisted values → "Rest of World". | Derived |
| Variable | Permitted values |
|---|---|
| REGION1 | North America, Europe, Rest of World |
| Version | Date | Author | Description | Reviewer | Sign-off |
|---|---|---|---|---|---|
| 1.3 | 2026-09-29 | yamaa docs build | Show study codelist names, external dictionaries, and ISO 8601 formats in variable rows; list the document's codelist values and metadata | ||
| 1.2 | 2026-09-29 | yamaa docs build | Classify ADaM copies from a declared input as Predecessor and recodes as Derived, and SDTM recodes of locally derived columns as Derived | ||
| 1.1 | 2026-09-29 | yamaa docs build | Resolve lookups into the donor record they select, and give every derivation shape a plain-language rule instead of its raw YAML | ||
| 1.0 | yamaa docs build | Initial generation from spec.yaml |
prompts/adam-adsl-country-region/full.md
Edit17 linesFollowing CDISC ADaM standards, use the provided DM dataset to create an ADSL dataset with one record per subject.
The output dataset should contain the following columns in this order: STUDYID, USUBJID, COUNTRY, REGION1
COUNTRY is the collected country in upper case, whichever country it is; a subject with no collected country is UNKNOWN. Case differences never split a country.
REGION1 is the region for that country: USA and CAN give "North America", DEU gives "Europe", and any other country (including UNKNOWN) gives "Rest of World". Every subject has both a country and a region.
Read the source datasets from /app/input and save the completed dataset as /app/output/adsl.csv.
prompts/adam-adsl-country-region/conventions.md
Edit13 linesFollowing CDISC ADaM standards, use the provided DM dataset to create an ADSL dataset with one record per subject.
The output dataset should contain the following columns in this order: STUDYID, USUBJID, COUNTRY, REGION1
COUNTRY is in upper case, or UNKNOWN.
REGION1 is "North America" for USA and CAN, "Europe" for DEU, or "Rest of World".
Read the source datasets from /app/input and save the completed dataset as /app/output/adsl.csv.
prompts/adam-adsl-country-region/brief.md
Edit8 linesFollowing CDISC ADaM standards, use the provided DM dataset to create an ADSL dataset with one record per subject.
The output dataset should contain the following columns in this order: STUDYID, USUBJID, COUNTRY, REGION1
Read the source datasets from /app/input and save the completed dataset as /app/output/adsl.csv.
run.R
Edit4 lineslibrary(yamaa)adsl <- yamaa_domain("spec.yaml")$outputadslrun.py
Edit4 linesimport yamaaadsl = yamaa.yamaa_domain("spec.yaml").outputadslsolutions/adam-adsl-country-region/result.R
Edit29 lines# Reference solution for the yamaa benchmark adam-adsl-country-region (R track).## Written from the benchmark's full prompt and its inputs alone, as an agent# would write it. Harbor's oracle agent runs it to check that the prompt can# be solved and that the grader scores a correct answer 1.library(dplyr, warn.conflicts = FALSE)library(readr)library(stringr)dm <- read_csv( "/app/input/dm.csv", col_types = cols(.default = col_character()))adsl <- dm |> mutate( COUNTRY = str_trim(coalesce(COUNTRY, "")), COUNTRY = if_else(COUNTRY == "", "UNKNOWN", str_to_upper(COUNTRY)), REGION1 = case_when( COUNTRY %in% c("USA", "CAN") ~ "North America", COUNTRY == "DEU" ~ "Europe", .default = "Rest of World" ) ) |> select(STUDYID, USUBJID, COUNTRY, REGION1)dir.create("/app/output", showWarnings = FALSE)write_csv(adsl, "/app/output/adsl.csv", na = "")solutions/adam-adsl-country-region/result.py
Edit33 lines# Reference solution for the yamaa benchmark adam-adsl-country-region (Python track).## Written from the benchmark's full prompt and its inputs alone, as an agent# would write it. Harbor's oracle agent runs it to check that the prompt can# be solved and that the grader scores a correct answer 1.from pathlib import Pathimport polars as pldm = pl.read_csv("/app/input/dm.csv", infer_schema=False)adsl = ( dm.with_columns( COUNTRY=pl.col("COUNTRY").fill_null("").str.strip_chars().str.to_uppercase() ) .with_columns( COUNTRY=pl.when(pl.col("COUNTRY") == "") .then(pl.lit("UNKNOWN")) .otherwise(pl.col("COUNTRY")) ) .with_columns( REGION1=pl.when(pl.col("COUNTRY").is_in(["USA", "CAN"])) .then(pl.lit("North America")) .when(pl.col("COUNTRY") == "DEU") .then(pl.lit("Europe")) .otherwise(pl.lit("Rest of World")) ) .select("STUDYID", "USUBJID", "COUNTRY", "REGION1"))Path("/app/output").mkdir(parents=True, exist_ok=True)adsl.write_csv("/app/output/adsl.csv")solutions/adam-adsl-country-region/result.sas
Edit24 lines/* opensas reference solution for the yamaa benchmark adam-adsl-country-region. Reads the benchmark inputs and derives the requested output. Execute with the existing opensas runtime: opensas /app/output/result.sas. */data dm; length STUDYID USUBJID COUNTRY $1024; infile "/app/input/dm.csv" dsd dlm="," firstobs=2 truncover lrecl=32767; input STUDYID : $char1024. USUBJID : $char1024. COUNTRY : $char1024.;run;data result; length REGION1 $20; set dm; COUNTRY=upcase(COUNTRY); if missing(COUNTRY) then COUNTRY='UNKNOWN'; if COUNTRY in ('USA','CAN') then REGION1='North America'; else if COUNTRY='DEU' then REGION1='Europe'; else REGION1='Rest of World';run;proc sql; create table final as select STUDYID, USUBJID, COUNTRY, REGION1 from result;quit;proc export data=final outfile="/app/output/adsl.csv" dbms=csv replace; run;
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