BioMed Research International / 2017 / Article / Tab 3

Review Article

Long-Term Sleep Duration as a Risk Factor for Breast Cancer: Evidence from a Systematic Review and Dose-Response Meta-Analysis

Table 3

The relative risks (RRs) for nonlinear and linear model.

Number of studiesRR
NonlinearLinear
4 h5 h6 h7 h8 h9 h10 h1 h increment

All100.0640.0120.9860.9800.9821.0001.031.0611.0910.028
1.0040.9981.0001.0181.0491.081.111
Premenopausal40.1320.1391.0120.198
Postmenopausal50.2410.2981.0030.506
ER+30.7050.0130.9710.9660.9741.0001.0421.0961.160.024
0.9970.9921.0001.0271.0701.1261.192
ER−30.0180.1391.0350.352

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