Table 3 Factors associated with depression: multivariable analysis

Demographic Information

Age Group

< 30 Years

Reference Group

30–39 Years

1.3

[0.7–2.3]

1.2

[0.6–2.3]

0.69

40–49 Years

2.7

[1.4–5.3]

2.1

[0.7–6.4]

0.19

≥ 50 Years

0.8

[0.4–1.7]

1.1

[0.2–4.9]

0.91

Marital Status

Single

Reference Group

Married

1.2

[0.7–1.9]

0.6

[0.3–1.2]

0.15

Divorced

4.2

[0.8–22.6]

2.4

[0.4–15.1]

0.36

Health Habits

Regular Exercise

No

Reference Group

Yes

0.3

[0.2–0.5]

0.3

[0.2–0.5]

< 0.01

Sleep Duration

< 5 h

Reference Group

5–8 h

1.1

[0.4–2.7]

0.8

[0.3–2.4]

0.74

> 8 h

0.3

[0.1–1.0]

0.2

[0.1–1.0]

0.04

Occupational Information

Experience Years

0–10

Reference Group

11–15

2.5

[1.3–4.9]

3.0

[1.1–8.4]

0.04

> 15

1.3

[0.8–2.2]

3.2

[0.9–11.4]

0.07

Total Flying Hours

< 3,000

Reference Group

3,000–5,000

1.6

[0.8–3.1]

1.1

[0.5–2.4]

0.82

5,000–10,000

1.8

[1.0–3.3]

0.6

[0.2–1.6]

0.34

> 10,000

0.7

[0.4–1.4]

0.5

[0.1–1.7]

0.26

Time Between Flights

< 1 h

Reference Group

1–4 h

0.6

[0.4–1.1]

0.6

[0.3–1.2]

0.15

4–24 h

0.6

[0.3–1.1]

0.8

[0.4–1.7]

0.57

> 24 h

0.3

[0.1–0.7]

0.3

[0.1–0.8]

0.02