International Journal of Surgery Interspinous process devices(IPD) alone versus decompression surgery for lumbar spinal stenosis(LSS): A systematic review and meta-analysis of randomized controlled trials Xing-wen Zhao, Jian-xiong Ma, Xin-long Ma, Fei Li, Wei-wei He, Xuan Jiang, Yin Wang, Biao Han, Bin Lu International Journal of Surgery Volume 39, Pages 57-64 (March 2017) DOI: 10.1016/j.ijsu.2017.01.074 Copyright © 2017 IJS Publishing Group Ltd Terms and Conditions
Fig. 1 Study flow diagram. International Journal of Surgery 2017 39, 57-64DOI: (10.1016/j.ijsu.2017.01.074) Copyright © 2017 IJS Publishing Group Ltd Terms and Conditions
Fig. 2 Risk of bias graph: review authors' judgements about each risk of bias item presented as percentages across all included studies. International Journal of Surgery 2017 39, 57-64DOI: (10.1016/j.ijsu.2017.01.074) Copyright © 2017 IJS Publishing Group Ltd Terms and Conditions
Fig. 3 Risk of bias summary: review authors' judgement about each risk of bias item for each included studies. International Journal of Surgery 2017 39, 57-64DOI: (10.1016/j.ijsu.2017.01.074) Copyright © 2017 IJS Publishing Group Ltd Terms and Conditions
Fig. 4 Forest plot of the meta-analysis for hospital stay time. International Journal of Surgery 2017 39, 57-64DOI: (10.1016/j.ijsu.2017.01.074) Copyright © 2017 IJS Publishing Group Ltd Terms and Conditions
Fig. 5 Forest plot of the meta-analysis for visual analogue scale (VAS) score for low back pain (A) and leg pain (B) at 2 years. International Journal of Surgery 2017 39, 57-64DOI: (10.1016/j.ijsu.2017.01.074) Copyright © 2017 IJS Publishing Group Ltd Terms and Conditions
Fig. 6 Forest plot of the meta-analysis for the incidence of complications (A) and reoperation rates (B). International Journal of Surgery 2017 39, 57-64DOI: (10.1016/j.ijsu.2017.01.074) Copyright © 2017 IJS Publishing Group Ltd Terms and Conditions