Table 5 Affecting individual metal exposure on PSQI components using Logistic regression.

From: Associations between essential trace elements and sleep quality in Iranian adults based on the Pittsburgh Sleep Quality Index

Metals

PSQI components

Subjective sleep quality

Sleep latency

Sleep duration

Habitual sleep efficiency

Sleep disturbances

Daytime dysfunction

Ca (mcg/dL)

0.974

(0.817, 1.17)

1.07

(0.888, 1.30)

0.978

(0.817, 1.17)

0.985

(0.807, 1.20)

1.08

(0.891, 1.31)

1.08

(0.911, 1.30)

Co (µ g/l)

0.816 (0.474,1.18)

0.950

(0.567, 1.40)

0.799

(0.318, 1.22)

0.988

(0.612, 1.49)

0.360

(0.103, 0.884)

0.845

(0.477, 1.23)

Cu (mcg/dL)

0.998 (0.983,1.01)

1.01

(0.992, 1.02)

1.02

(1.00, 1.04)*

1.02

(0.992, 1.04)

0.995

(0.980, 1.01)

0.994

(0.979, 1.01)

Fe (mcg/dL)

0.984 (0.971,0.995)*

0.986

(0.972,0.99)*

0.992

(0.981, 1.00)

0.984

(0.968, 0.997)*

0.994

(0.985, 1.00)

1.01

(0.997, 1.02)

Mg (mg/dL)

1.03

(0.868,1.22)

3.22

(0.273, 5.19)

0.772

(0.008, 7.96)

1.42

(0.008, 3.21)

1.77

(0.253, 1.23)

0.447

(0.062, 2.97)

Mn (µ g/l)

0.894 (0.823,0.971)

1.01

(0.839, 1.22)

0.922

(0.761, 1.10)

0.995

(0.808, 1.22)

1.27

(1.08, 1.52)*

1.13

(0.972, 1.33)

Se (mg/dL)

1.24

(1.05, 1.50)*

0.997

(0.812, 1.17)

1.12

(0.952, 1.34)

0.996

(0.821, 1.21)

1.18

(1.00, 1.40)

0.891

(0.765, 1.03)

Zn (mg/dL)

0.991 (0.962,1.02)

0.992

(0.958, 1.02)

0.993

(0.963, 1.02)

0.998

(0.962, 1.03)

0.972

(0.942, 1.00)

1.01

(0.988, 1.05)

  1. *indicates P value < 0.05. The values in the table indicate the OR values and the values in parentheses indicate the corresponding 95% confidence intervals for OR.
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