{"resource":"https://api.magentlab.com/api/calc/gold_copd","service":"magent","areas":["other"],"answering":true,"http_status":402,"latency_ms":280,"price_usdc":0.005,"buyers_30d":2,"calls_30d":3,"description":"GOLD 2017 spirometric grade (Vogelmeier executive summary). Post-bronchodilator FEV1/FVC < 0.70 defines obstruction; then GOLD 1 if FEV1 % predicted >= 80, GOLD 2 if 50 to <80, GOLD 3 if 30 to <50, GOLD 4 if <30. Ratio >= 0.70 returns not_o","id":"a49b1bc9d8f9","category":"Calculators and conversions","accuracy":null,"tool_calls":null,"checked_day":"2026-10-11","page":"https://velliumandco.com/sellers/a49b1bc9d8f9"}