Table 1.
Knee Pain Questions in the Framingham Osteoarthritis Study and NHANES
| Study | Knee Pain Query by Time Period | ||
|---|---|---|---|
| NHANES I, II, III | 1974–75 | 1976–1980 | 1988–1994 |
| “Have you ever had pain or aching in any of your joints on most days for AT LEAST 1 MONTH?” | “Have you had pain or aching in any joint other than the back or neck on most days for at least six weeks?” | “Have you ever had pain in your knees on most days for at least 6 weeks? This also includes aching and stiffness.” | |
| “Have you ever had pain in or around the knee including the back of the knee on most days for AT LEAST 1 MONTH?” | “Which joints were painful?” Knee? | ||
| NHANES 1999–2004 | 1999–2000 | 2001–2002 | 2003–2004 |
| “During the past 12 months, have you had pain, aching stiffness or swelling in or around a joint? [Do not include neck pain]” | “During the past 12 months, have you had pain, aching stiffness or swelling in or around a joint? [Do not include neck pain]” | “During the past 12 months, have you had pain, aching stiffness or swelling in or around a joint? [Do not include neck pain]” | |
| “Were these symptoms present on most days for at least 1 month?” | “Were these symptoms present on most days for at least 1 month?” | “Were these symptoms present on most days for at least 1 month?” | |
| “Please look at this card and give me the joints that were affected.” | “Please look at this card and give me the joints that were affected.” | “Please look at this card and give me the joints that were affected.” | |
| …Knee…. | …Knee… | …Knee… | |
| FOA Study | 1983–85 | 1992–95 | 2002–05 |
| a. “Have you ever had pain lasting at least a month in or around the knee, including the back of the knee?” If so, ”When did the pain start?” and “When was the last time you had this pain?” | a. “Have you ever had pain lasting at least a month in or around the knee, including the back of the knee?” If so, ”When did the pain start?” and “When was the last time you had this pain?” | a. “Have you ever had pain lasting at least a month in or around the knee, including the back of the knee?” If so, ”When did the pain start?” and “When was the last time you had this pain?” | |
Abbreviations: NHANES-National Health and Nutrition Examination Survey; FOA-Framingham Osteoarthritis Study