Kaplan-Meier for cumulative risk of joint replacement surgery among DM with osteoarthritis and COX-2 inhibitor patients aged 18 and over stratified by metformin with log-rank test.
<p>Kaplan-Meier for cumulative risk of joint replacement surgery among DM with osteoarthritis and COX-2 inhibitor patients aged 18 and over stratified by metformin with log-rank test.</p>