Table 6.

Self-reported at-home hearing protection device use frequency (1 rarely/never to 6 always) by task and intervention arm. p-values represent the statistical significance as compared to the control at pre-intervention using a mixed linear model.

	Pre-Intervention				Post-Intervention
	n	Mean	(SD)	p-Value	n	Mean	(SD)	p-Value
Mowing
Control	67	2.52	(1.99)	Ref	32	4.06	(1.29)	0.0004
HearWell	55	2.80	(1.98)	0.41	26	3.96	(1.66)	0.002
HearWell Design Team	29	2.93	(2.02)	0.33	17	3.82	(1.70)	0.01
Chainsaw
Control	66	3.41	(2.10)	Ref	25	3.64	(1.66)	0.62
HearWell	58	3.36	(2.05)	0.90	24	3.38	(1.88)	0.94
HearWell Design Team	27	4.04	(1.97)	0.18	14	3.57	(1.79)	0.78
Power tools
Control	69	2.87	(1.87)	Ref	28	3.89	(1.17)	0.01
HearWell	57	3.04	(1.79)	0.59	30	3.57	(1.61)	0.07
HearWell Design Team	28	3.54	(1.86)	0.09	17	3.88	(1.32)	0.04
Leaf blowing
Control	68	3.18	(2.09)	Ref	28	4.00	(1.41)	0.07
HearWell	58	3.26	(1.99)	0.81	27	3.70	(1.77)	0.24
HearWell Design Team	28	3.75	(2.01)	0.23	16	3.69	(1.85)	0.35
Plowing
Control	52	1.37	(1.07)	Ref	34	5.09	(0.87)	<0.0001
HearWell	48	1.38	(1.14)	0.97	34	4.71	(1.47)	<0.0001
HearWell Design Team	23	1.39	(1.12)	0.93	19	4.84	(1.21)	<0.0001
Snow blowing
Control	56	1.75	(1.48)	Ref	30	4.83	(1.29)	<0.0001
HearWell	49	2.24	(1.81)	0.12	30	4.87	(1.46)	<0.0001
HearWell Design Team	26	2.73	(2.07)	0.02	18	4.89	(1.13)	<0.0001
Motorized recreational vehicles
Control	55	1.62	(1.30)	Ref	35	5.14	(0.60)	<0.0001
HearWell	52	1.42	(0.98)	0.42	33	4.48	(1.48)	<0.0001
HearWell Design Team	25	2.08	(1.87)	0.13	18	5.00	(0.84)	<0.0001
Music concerts and racetracks
Control	54	1.78	(1.57)	Ref	35	4.74	(1.01)	<0.0001
HearWell	52	1.77	(1.46)	0.98	34	4.50	(1.01)	<0.0001
HearWell Design Team	24	2.29	(1.94)	0.17	18	4.33	(1.41)	<0.0001