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Table 4 Adjusted HR of mortality for the effects of sleep duration with age, duration of diabetes, age at diabetes diagnosis, insulin use, hypertension, hyperlipidemia, HbA1c, and obesity

From: Sleep duration predicts subsequent long-term mortality in patients with type 2 diabetes: a large single-center cohort study

Variables

HR (95% CI)

All-cause mortality

Expanded CVD mortality

Non-expanded CVD mortality

Sleep duration = 7 & age < 65

1.00

1.00

1.00

Sleep duration = 7 & age ≥ 65

3.48 (2.95, 4.12)***

3.61 (2.81, 4.64)***

3.41 (2.72, 4.26)***

Sleep duration ≠ 7 & age < 65

1.32 (1.16, 1.51)***

1.40 (1.14, 1.71)**

1.27 (1.06, 1.51)**

Sleep duration ≠ 7 & age ≥ 65

4.00 (3.49, 4.60)***

3.82 (3.09, 4.72)***

4.20 (3.50, 5.04)***

 p for interaction

0.12

0.04

0.82

 RERI

0.20 (-0.26, 0.65)

-0.19 (-0.88, 0.51)

0.52 (-0.09, 1.14)

 AP

0.05 (-0.08, 0.18)

-0.05 (-0.26, 0.16)

0.12 (-0.03, 0.28)

 S index

1.07 (0.91, 1.26)

0.94 (0.74, 1.18)

1.20 (0.95, 1.50)

Sleep duration = 7 & duration of DM < 5

1.00

1.00

1.00

Sleep duration = 7 & duration of DM ≥ 5

1.24 (1.05, 1.46)**

1.55 (1.20, 1.99)***

1.05 (0.84, 1.30)

Sleep duration ≠ 7 & duration of DM < 5

1.15 (1.00, 1.32)*

1.24 (0.99, 1.54)

1.10 (0.93, 1.31)

Sleep duration ≠ 7 & duration of DM ≥ 5

1.60 (1.40, 1.84)***

1.82 (1.47, 2.27)***

1.47 (1.24, 1.75)***

 p for interaction

0.25

0.72

0.05

 RERI

0.21 (0.01, 0.41)

0.04 (− 0.32, 0.39)

0.32 (0.08, 0.56)

 AP

0.13 (0.04, 0.23)

0.02 (− 0.15, 0.19)

0.22 (0.11, 0.33)

 S index

1.55 (0.86, 2.78)

1.05 (0.66, 1.66)

3.17 (0.39, 25.92)

Sleep duration = 7 & DM diagnosis > 45

1.00

1.00

1.00

Sleep duration = 7 & DM diagnosis ≤ 45

1.39 (1.13, 1.72)**

1.00 (0.74, 1.34)

1.90 (1.39, 2.60)***

Sleep duration ≠ 7 & DM diagnosis > 45

1.29 (1.04, 1.59)*

1.14 (0.86, 1.51)

1.44 (1.05, 1.97)*

Sleep duration ≠ 7 & DM diagnosis ≤ 45

1.69 (1.38, 2.07)***

1.22 (0.93, 1.60)

2.32 (1.72, 3.12)***

 p for interaction

0.63

0.69

0.34

 RERI

0.01 (− 0.25, 0.28)

0.08 (− 0.24, 0.4)

 − 0.02 (− 0.46, 0.42)

 AP

0.01 (− 0.12, 0.14)

0.06 (− 0.09, 0.22)

 − 0.01 (− 0.21, 0.19)

 S index

1.02 (0.68, 1.51)

1.55 (0.09, 26.96)

0.98 (0.71, 1.36)

Sleep duration = 7 & non-insulin use

1.00

1.00

1.00

Sleep duration = 7 & insulin use

1.40 (1.12, 1.76)**

1.37 (0.99, 1.89)

1.43 (1.03, 1.98)*

Sleep duration ≠ 7 & non-insulin use

1.23 (1.11, 1.35)***

1.22 (1.05, 1.41)**

1.24 (1.09, 1.41)**

Sleep duration ≠ 7 & insulin use

1.76 (1.54, 2.03)***

1.57 (1.28, 1.93)***

1.93 (1.60, 2.33)***

 p for interaction

0.79

0.76

0.55

 RERI

0.13 (− 0.22, 0.49)

 − 0.01 (− 0.49, 0.47)

0.26 (− 0.26, 0.78)

 AP

0.08 (− 0.1, 0.25)

 − 0.01 (− 0.27, 0.26)

0.14 (− 0.09, 0.37)

 S index

1.21 (0.7, 2.11)

0.98 (0.43, 2.25)

1.39 (0.66, 2.94)

Sleep duration = 7 & SBP/DBP ≤ 130/85

1.00

1.00

1.00

Sleep duration = 7 & SBP/DBP > 130/85

0.96 (0.81, 1.13)

1.00 (0.78, 1.28)

0.92 (0.74, 1.15)

Sleep duration ≠ 7 & SBP/DBP ≤ 130/85

1.12 (0.97, 1.30)

1.11 (0.89, 1.39)

1.13 (0.93, 1.37)

Sleep duration ≠ 7 & SBP/DBP > 130/85

1.24 (1.07, 1.43)**

1.25 (1.01, 1.56)*

1.22 (1.01, 1.47)*

 p for interaction

0.11

0.38

0.19

 RERI

0.16 (− 0.01, 0.34)

0.14 (− 0.13, 0.41)

0.17 (− 0.06, 0.4)

 AP

0.13 (0.04, 0.22)

0.11 (− 0.02, 0.25)

0.14 (0.03, 0.26)

 S index

3.17 (0.11, 94.90)

2.32 (0.08, 68.01)

4.61 (0.003, 7316.63)

Sleep duration = 7 & TG < 150 mg/dL

1.00

1.00

1.00

Sleep duration = 7 & TG ≥ 150 mg/dL

1.09 (0.92, 1.29)

1.35 (1.05, 1.72)*

0.91 (0.72, 1.15)

Sleep duration ≠ 7 & TG < 150 mg/dL

1.21 (1.08, 1.35)**

1.23 (1.03, 1.47)*

1.19 (1.03, 1.38)*

Sleep duration ≠ 7 & TG ≥ 150 mg/dL

1.38 (1.22, 1.56)***

1.56 (1.29, 1.88)***

1.25 (1.06, 1.47)**

 p for interaction

0.63

0.66

0.29

 RERI

0.08 (v0.13, 0.28)

 − 0.02 (− 0.36, 0.32)

0.14 (− 0.11, 0.39)

 AP

0.06 (− 0.06, 0.17)

 − 0.01 (− 0.2, 0.17)

0.11 (− 0.03, 0.26)

 S index

1.25 (0.62, 2.52)

0.96 (0.54, 1.72)

2.36 (0.15, 36.82)

Sleep duration = 7 & HbAlc < 7%

1.00

1.00

1.00

Sleep duration = 7 & HbAlc ≥ 7%

1.04 (0.88, 1.24)

1.28 (0.98, 1.66)

0.91 (0.72, 1.13)

Sleep duration ≠ 7 & HbAlc < 7%

1.18 (1.01, 1.38)*

1.21 (0.94, 1.55)

1.18 (0.96, 1.44)

Sleep duration ≠ 7 & HbAlc ≥ 7%

1.31 (1.13, 1.52)***

1.53 (1.21, 1.93)***

1.17 (0.96, 1.41)

 p for interaction

0.54

0.96

0.49

 RERI

0.08 (− 0.11, 0.28)

0.04 (− 0.28, 0.37)

0.08 (− 0.17, 0.33)

 AP

0.06 (− 0.04, 0.16)

0.03 (− 0.13, 0.19)

0.07 (− 0.06, 0.20)

 S index

1.37 (0.50, 3.80)

1.09 (0.53, 2.23)

1.96 (0.05, 82.24)

Sleep duration = 7 & BMI < 27 kg/m2

1.00

1.00

1.00

Sleep duration = 7 & BMI ≥ 27 kg/m2

1.02 (0.86, 1.22)

0.85 (0.65, 1.10)

1.19 (0.95, 1.50)

Sleep duration ≠ 7 & BMI < 27 kg/m2

1.31 (1.17, 1.45)***

1.21 (1.03, 1.42)*

1.39 (1.20, 1.61)***

Sleep duration ≠ 7 & BMI ≥ 27 kg/m2

1.08 (0.95, 1.22)

0.99 (0.83, 1.19)

1.16 (0.98, 1.38)

 p for interaction

0.03

0.85

0.008

 RERI

 − 0.25 (− 0.46, − 0.03)

 − 0.06 (− 0.34, 0.22)

 − 0.42 (− 0.75, − 0.09)

 AP

 − 0.23 (− 0.39, − 0.07)

 − 0.06 (− 0.26, 0.13)

 − 0.36 (− 0.61, − 0.12)

 S index

0.24 (0.06, 0.93)

 − 0.13 (NE, NE)

0.27 (0.10, 0.73)

  1. SBP: systolic blood pressure; DBP: diastolic blood pressure; TG: triglyceride; BMI: body mass index; AP: proportion attributable to interaction; RERI: relative excess risk due to interaction; S index: synergy index; *p < 0.05; **p < 0.01; ***p < 0.001; NE: not estimated
  2. Multivariate model adjusted for age, sex, smoking, alcohol drinking, exercising, body mass index, duration of diabetes, age at diabetes diagnosis, types of diabetes treatment, complications, medication use, and biomarkers