Figure 1From: Body mass index, occupational activity, and leisure-time physical activity: an exploration of risk factors and modifiers for knee osteoarthritis in the 1946 British birth cohort Results for interaction between BMI and activity exposure. A - Occupational Exposure to Lifting among men; B – BMI level (SD) among men; C – Leisure-time activity exposure among women; D – BMI level (SD) among women.Back to article page