Fig. 1From: Factors affecting postoperative mortality of patients with insufficient union following osteoporotic vertebral fractures and impact of preoperative serum albumin on mortalityComparisons of blood loss (a) and surgical time (b) among surgical procedures. ADF, anterior spinal decompression and fusion; BKP, balloon kyphoplasty; HA, hydroxyapatite; PF, posterior fixation; VP, vertebroplasty. *P < 0.05; NS = not significant. Data were analyzed using the unpaired t-testBack to article page