UNLABELLED: Serum insulin-like growth factor-1 (IGF-1) and insulin-like growth factor binding protein-3 (IGFBP-3) are conventionally considered available for the diagnosis of growth hormone deficiency (GHD), but the results about their diagnostic values are inconsistent among some recent epidemiological studies. The aim of this study is to assess the diagnostic values of serum IGF-1 and IGFBP-3 for GHD by conducting a systematic review and meta-analysis. Studies on serum IGF-1 and IGFBP-3 used in GHD diagnosis were systematically searched from databases PubMed, EMBASE, and CNKI (up to December 2013). Characteristics of the studies and data were independently collected according to the inclusion criteria by two authors. The quality of included studies was assessed using quality assessment of diagnostic accuracy studies (QUADAS). Both sensitivity (SEN) and specificity (SPE) of IGF-1 and IGFBP-3 in GHD diagnosis were estimated on statistical software Meta-DiSc and Stata. A total of 12 studies were included for the final analysis. IGF-1 had SEN of 0.66, SPE of 0.69, positive likelihood ratio (PLR) of 2.48, negative likelihood ratio (NLR) of 0.51, area under the summary receiver operating characteristic curve (SROC) of 0.78, and Q* value of 0.72. Serum IGFBP-3 had SEN of 0.50, SPE of 0.79, PLR of 2.69, NLR of 0.64, area under SROC of 0.80, and Q* value of 0.73. CONCLUSION: Serum IGF-1 and IGFBP-3 are useful for the diagnosis of GHD and can be utilized as auxiliary diagnosis indexes for provocative test.
UNLABELLED: Serum insulin-like growth factor-1 (IGF-1) and insulin-like growth factor binding protein-3 (IGFBP-3) are conventionally considered available for the diagnosis of growth hormone deficiency (GHD), but the results about their diagnostic values are inconsistent among some recent epidemiological studies. The aim of this study is to assess the diagnostic values of serum IGF-1 and IGFBP-3 for GHD by conducting a systematic review and meta-analysis. Studies on serum IGF-1 and IGFBP-3 used in GHD diagnosis were systematically searched from databases PubMed, EMBASE, and CNKI (up to December 2013). Characteristics of the studies and data were independently collected according to the inclusion criteria by two authors. The quality of included studies was assessed using quality assessment of diagnostic accuracy studies (QUADAS). Both sensitivity (SEN) and specificity (SPE) of IGF-1 and IGFBP-3 in GHD diagnosis were estimated on statistical software Meta-DiSc and Stata. A total of 12 studies were included for the final analysis. IGF-1 had SEN of 0.66, SPE of 0.69, positive likelihood ratio (PLR) of 2.48, negative likelihood ratio (NLR) of 0.51, area under the summary receiver operating characteristic curve (SROC) of 0.78, and Q* value of 0.72. Serum IGFBP-3 had SEN of 0.50, SPE of 0.79, PLR of 2.69, NLR of 0.64, area under SROC of 0.80, and Q* value of 0.73. CONCLUSION: Serum IGF-1 and IGFBP-3 are useful for the diagnosis of GHD and can be utilized as auxiliary diagnosis indexes for provocative test.
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