a significant trendP < 0.001
The results in Table 2 also indicated that for males, the multivariable-adjusted hazard ratios (HRs) of all-cause mortality from the lowest to the highest quintiles of SMI were 1 (reference), 0.72 (95% CI, 0.61–0.84), 0.59 (95% CI, 0.47–0.74), 0.44 (95% CI, 0.34–0.56), and 0.54 (95% CI, 0.41–0.72), with a significant trend ( P < 0.001).