Table 2.

Possible influencing factors of the occurrence of MSDs symptoms.

Factors	Occurrence of symptoms
	COR (95% CI)	p-value	AOR*(95% CI)	p-value
Lifestyle variables
Regularity of meals
Always	ref.		ref.
Often	1.83 (1.04–3.23)	0.04	1.89 (1.05–3.39)	0.03
Sometimes	2.52 (1.50–4.25)	<0.01	2.54 (1.49–4.34)	<0.01
Seldom	4.28 (2.32–7.89)	<0.01	4.24 (2.28–7.91)	<0.01
Never	1.19 (0.65–2.16)	0.58	1.15 (0.62–2.13)	0.66
Daily sleep duration
≤6 h	1.24 (0.86–1.80)	0.25	1.25 (0.86–1.83)	0.24
7–8 h	ref.		ref.
≥9 h	1.72 (1.01–2.91)	0.05	1.63 (0.94–2.80)	0.08
Work-related variables
Working status
Full-time	ref.		ref.
Part-time	1.16 (0.81–1.66)	0.42	1.17 (0.81–1.69)	0.41
Years of employment
<5 years	ref.		ref.
≥5 years	1.14 (0.78–1.67)	0.50	1.07 (0.72–1.58)	0.73
Daily working hours
<8 h	ref.		ref.
8–10 h	1.36 (0.93–2.01)	0.12	1.34 (0.91–1.99)	0.14
11 13 hours	1.25 (0.69–2.27)	0.46	1.22 (0.67–2.24)	0.52
≥14 hours	1.12 (0.44–2.83)	0.81	1.14 (0.45–2.90)	0.78
Daily number of floors climbed
≤10 floors	ref.		ref.
11–20 floors	1.19 (0.78–1.81)	0.41	1.25 (0.81–1.92)	0.31
21–30 floors	1.19 (0.70–2.03)	0.52	1.21 (0.70–2.08)	0.50
≥31 floors	1.26 (0.71–2.22)	0.43	1.29 (0.72–2.31)	0.39
Daily food delivery distance
≤25 km	ref.		ref.
26–50 km	0.68 (0.43–1.10)	0.12	0.70 (0.43–1.14)	0.25
51–75 km	0.67 (0.43–1.05)	0.08	0.68 (0.43–1.07)	0.10
≥76 km	0.63 (0.37–1.08)	0.09	0.63 (0.36–1.08)	0.09

Note: ref.: reference;

^*: adjusted for sex, age and vehicle type.