Fig 2 Associations between characteristics at baseline and all cause mortality up to 15 years thereafter. Shows hazard ratios with corresponding 95% confidence intervals from multivariable Cox proportional hazards models after multiple imputation of missing values in covariates. P values were calculated by using two sided Wald tests. NSAIDs=non-steroidal anti-inflammatory drugs. *Age 35-54 as reference category. †Isolated knee osteoarthritis as reference category