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Table 3 Multiple linear regression analysis of serum ferritin, hepcidin, and hepcidin/ferritin

From: Serum and salivary ferritin and Hepcidin levels in patients with chronic periodontitis and type 2 diabetes mellitus

  Model b S.E. b’ t P
Serum ferritin Constant 503.687 108.718   4.633 < 0.001*
Gender −100.828 37.012 −0.265 − 2.724 0.008*
Age −4.991 1.582 −0.315 −3.154 0.002*
absence or presence of CP 110.537 35.156 0.316 3.144 0.002*
Serum hepcidin Constant 359.086 58.876   6.099 < 0.001*
Gender −54.760 19.875 −0.275 −2.755 0.007*
Age −1.946 0.819 −0.235 −2.376 0.020*
HDL −30.911 15.367 −0.203 −2.012 0.048*
absence or presence of CP 47.604 18.327 0.260 2.598 0.011*
Serum hepcidin/ferritin Constant 0.717 0.141   5.097 < 0.001*
Age 0.008 0.002 0.354 3.391 0.001*
absence or presence of CP −0.143 0.052 −0.287 −2.752 0.007*
  1. X1: gender (1 = male, 2 = female); X2: age (year); X3: BMI; X4: FBG (mg/dl); X5: TG (mmol/l); X6: CHOL (mmol/l); X7: HDL (mmol/l); X8: LDL (mmol/l); X9:ALT (u/l); X10:AST (u/l); X11: absence or presence of CP (1 = non-CP; 2 = CP); X12: absence or presence of T2DM (1 = non-DM; 2 = DM); X13: duration of T2DM (0 = non-T2DM, 1 = 1–5 years, 2 = 6–10 years, 3 = more than 10 years)
  2. Stepwise method used; *Significantly different P < 0.05