Table 1. Demographic characteristics of responders: Predictors, case numbers and missing data.

			Respondent numbers
	Predictor		Survey 1	Survey 2	Survey 3	Total	Missing
Q2	Staff grade	All	676	539	431	1646	30
	State registered nurse	1	572	473	362	1407
	State registered midwife	2	40	26	26	92
	State enrolled nurse	3	56	32	38	126
	Assistant in nursing	4	8	8	5	21
	[“Others” allocated to the nearest similar employment class]					[44]
Q3	Covid ward status	All	667	538	388	1631	45
	Covid-negative patients	0	547	487	388	1422
	Both	1	41	20	13	74
	Covid-positive patients	2	79	31	25	135
Q5	Sector	All	377	538	433	1348	328
	Public	1	359	517	412	1288
	Private/Both/Other	0	18	21	21	60
Q6	Gender	All	670	538	433	1641	35
	Female	0	590	462	390	1442
	Male	1	80	76	43	199
Q7	Highest education level	All	670	539	433	1642	34
	Hospital certificate	0	61	54	47	162
	TAFE certificate	0	35	25	33	93
	Undergraduate student	0	9	6	4	19
	Batchelor degree	1	210	171	130	511
	Postgrad certificate/Masters/PhD	2	355	283	219	857
Q8	Age group (years)	All	675	538	432	1645	31
	18–25	1	37	26	22	85
	26–30	2	56	36	30	122
	31–40	3	138	104	88	330
	41–50	4	134	123	88	345
	51–60	5	234	186	151	571
	61–71	6	75	61	51	187
	71+	7	1	2	2	5
Q9	Social situation	All	449	527	429	1405	271
	Living with partner/family/friends	1	373	434	352	1159
	Living caring for others	2	65	78	69	212
	Living alone	3	11	15	8	34
Q10	Smoking	All	664	491	392	1619	57
	Non-smoker	0	609	491	392	1492
	Smoker	1	55	40	32	127