Table 3. Comparison between total dataset and PSM dataset on logistic regression result (anemia, anemia-ferritin status effect for osteopenia or osteoporosis).

^a)P<0.05. ^b)P<0.01. ^c)Anemia-ferritin status was categorized as normal, anemia with low ferritin, and anemia without low ferritin.

PSM, propensity score matching; OR, odds ratio; CI, confidence interval; BMI, body mass index.