Table 3.

Relative risk analyses for test periods of overall coastal drowning and the top three coastal activities.

Variable	Time Period	Drowning Deaths (n)	Participation (n/1000)	Weighted Participation (n/1000)	RR	95% CI	p-Value
All activities	Annual average (12 months)	110	13,830	13,830	1	(1.61–2.7)	<0.001
	2019/20 (12 months)	120	14,097	7245	2.08
	Average bushfire period	69	13,830	13,830	1	(1.67–3.24)	<0.001
	2019/20 bushfire period	73	14,097	6484	2.32
	Average COVID-19 period	35	13,830	13,830	1	(1.11–2.77)	0.02
	2019/20 COVID-19 period	38	14,097	8570	1.75
Activity
Swimming/Wading	Annual average (12 months)	33	10,377	10,377.394	1	(0.93–2.63)	0.37
	2019/20 (12 months)	25	9763	5018.213	1.57
	Average bushfire period	24	10,377	10,377.394	1	(1.13–3.63)	0.02
	2019/20 bushfire period	21	9763	4491.008	2.02
	Average COVID-19 period	8	10,377	10,377.394	1	(0.26–2.9)	1.00
	2019/20 COVID-19 period	NP	9763	5935.941	0.87
Boating & PWC	Annual average (12 months)	24	3182	3182.319	1	(2.05–5.82)	<0.001
	2019/20 (12 months)	34	2540	2539.674	3.45
	Average bushfire period	14	3182	3182.319	1	(1.41–6.05)	<0.005
	2019/20 bushfire period	15	2540	2539.674	2.92
	Average COVID-19 period	8	3182	3182.319	1	(1.64–9.11)	<0.002
	2019/20 COVID-19 period	15	2540	2539.674	3.86
Rock Fishing	Annual average (12 months)	12	1224	1223.986	1	(2.03–8.75)	<0.001
	2019/20 (12 months)	18	854	854.144	4.22
	Average bushfire period	6	1224	1223.986	1	(1.45–12.07)	0.008
	2019/20 bushfire period	8	854	854.144	4.19
	Average COVID-19 period	5	1224	1223.986	1	(1.24–11.62)	0.027
	2019/20 COVID-19 period	8	854	854.144	3.80

NB: Numbers of bushfire and COVID-19 drowning deaths will not equal total drowning deaths (n) since July 2019 is not included in either bushfire or COVID-19 periods. NP = Not Presented. Bold type indicates significance.