GSTM1 and congestive heart failure: After multivariate adjustment for factors such as age, sex, height, weight, smoking, Hb, alb, TG, Coronary heart disease (CHD), CHF and glucocorticoid levels (the assignment table is shown in Supplemental Table 1), hemoglobin level may have effects on diaphragmatic functions such as diaphragm excursion at TLC (DMTLC) and △m (regression coefficient = 0.0221316, p = 0.019 and regression coefficient = 0.0223932, p = 0.005, respectively; Table 3).