Table 1

Sociodemographic characteristics of participants (n=588)

Participant characteristic	Total
Participant characteristic	n	%
What is your gender?
Female	449	76.4
Male	135	23
Non-binary/prefer not to say	4	0.6
What is your age? (years)
19–24 years	79	13.4
25–29 years	114	19.4
30–34 years	113	19.2
35–39 years	65	11.1
40–44 years	65	11.1
45–49 years	54	9.2
50–54 years	49	8.3
Over 54 years	49	8.3
How long have you been a shift worker (years)
<1 year	1	0.2
1–2 years	104	17.7
3–5 years	136	23.1
6–9 years	104	17.7
10–19 years	142	24.1
20<years	101	17.2
Shift work schedule/routine
Rotating	505	85.9
Night	47	8
Afternoon	5	0.9
Morning	3	0.5
Other*	28	4.7
Industry by ANZSIC† Code
Mining	122	20.7
Manufacturing	7	1.2
Retail trade	2	0.3
Accommodation and food services	10	1.7
Transport, postal and warehousing	32	5.4
Information media and telecommunications	1	0.2
Public administration and safety	6	1.0
Healthcare and social assistance	379	64.5
Arts and recreation services	1	0.2
Government or defence	24	4.1
Other	4	0.7
Do you suffer from any diagnosed sleep-related disorders?
No	393	66.8
Sleep apnoea	31	5.3
Snoring	54	9.2
Insomnia	75	12.8
Restless leg syndrome	17	2.9
Other	18	3

*Reflects shift work schedules that are a combination of rotating, nights, afternoon, morning or another description of schedule outside of these.
†The ANZSIC system classifies entities based on their main business activity.
ANZSIC, Australia and New Zealand Standard Industrial Classification.