Severity weights for noise outcomes

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Scope

For the purpose of burden-of-disease (DALY) calculations, what are the most widely accepted severity weights (or ranges thereof) for the presently known health effects of environmental noise?

Definition

Data

Compiled from:

• de Hollander AEM, Melse JM, Lebret E, Kramers PGN (1999). An aggregate public health indicator to represent the impact of multiple environmental exposures. Epidemiology 10, p. 606-617.

• GBD (2002). Global Burden of Disease in 2002: data sources, methods and results. Colin D. Mathers, Christina Bernard, Kim Moesgaard Iburg, Mie Inoue, Doris Ma Fat, Kenji Shibuya, Claudia Stein, Niels Tomijima, Hongyi Xu. Global Programme on Evidence for Health Policy Discussion Paper No. 54. World Health Organization 2003 (revised February 2004)

• Kempen EEM van (1998). Milieu-DALY’s: zieketelast die wordt veroorzaakt door blootstelling aan milieufactoren. Ontwikkeling van wegingsfactoren voor verschillende effecten van milieuverontreiniging en een schatting van de omvang van deze effecten. Universiteit van Maastricht, scriptie.

• Knol A, Staatsen B (2005). Trends in the environmental burden of disease in the Netherlands 1980 – 2020.

• Lopez AD, Mathers CD, Ezzati M,. Jamison DT, Murray CJL (eds.) (2006). Global Burden of Disease and Risk Factors. The World Bank and Oxford University Press

• Stassen KR, Collier P, Torfs R (2008). Environmental burden of disease due to transportation noise in Flanders (Belgium). Transportation Research Part D: Transport and Environment. Vol. 13, 355-358. doi:10.1016/j.trd.2008.04.003

• WHO (2005). Quantifying burden of disease from environmental noise: Second technical meeting report. Bern, Switzerland, 15 – 16 December 2005.

• WHO (2009). Night noise guidelines for Europe

Dependencies

None (but generally speaking, values for severity weights may depend on the geographical area)

Unit

None (pure number).

Formula

None.

Result

Outcome	Degree	Value	Source of original data	Page / Table	Comment
annoyance	severe	0.12	van Kempen 1998
annoyance	severe	0.01	de Hollander 1999
annoyance	severe	0.02	Knol & Staatsen 2005		"Severe annoyance and sleep disturbance are hard to weigh, because there is little information on their relationship with quality of life measures. We have used a severity factor of 0.02, with a relatively large uncertainty interval (0.01-0.12 for annoyance, 0.01-0.10 for sleep disturbance). The minimum value (0.01) is based on De Hollander et al. (1999), who used a panel of environment-oriented physicians to attribute severity weights to various health states based on a protocol by Stouthard (1997). The maximum values (0.10 and 0.12) are based on Van Kempen (1998) who did a panel study with 13 medical experts, also based on a protocol by Stouthard. In that study, sleep disturbance and annoyance were weighted relatively high. Since the weight factors are so small, these variations have a relatively big impact on the outcomes."
annoyance	severe	0.01-0.12	WHO 2005	Page 5; Box 2 on p. 12	"Celia Rodrigues (WHO) presented preliminary estimation of DALYs from annoyance using Eurostat survey data (2000). ... It was estimated that the DALYs for high annoyance from noise is 278,174 for disability weight 0.02, 139,087 for disability weight 0.01, for 1,669,041 for disability weight 0.12." NOTE: 0.02 given as First choice in Box 2
sleep disturbance	severe	0.1	van Kempen 1998
sleep disturbance	severe	0.01	de Hollander 1999
sleep disturbance	severe	0.02	Knol & Staatsen 2005		"Severe annoyance and sleep disturbance are hard to weigh, because there is little information on their relationship with quality of life measures. We have used a severity factor of 0.02, with a relatively large uncertainty interval (0.01-0.12 for annoyance, 0.01-0.10 for sleep disturbance). The minimum value (0.01) is based on De Hollander et al. (1999), who used a panel of environment-oriented physicians to attribute severity weights to various health states based on a protocol by Stouthard (1997). The maximum values (0.10 and 0.12) are based on Van Kempen (1998) who did a panel study with 13 medical experts, also based on a protocol by Stouthard. In that study, sleep disturbance and annoyance were weighted relatively high. Since the weight factors are so small, these variations have a relatively big impact on the outcomes."
sleep disturbance	severe	0.089	WHO 2005	Page 4.	"Ruedi Müller-Wenk (Switzerland) presented the results from an original study on disability weight for sleep disturbance related to noise. It was questioned whether “noise-induced sleep disturbance” is compatible with “primary insomnia”. Primary insomnia is included in the global burden of disease estimation, however, it does not include insomnia from environmental factors by definition. Acknowledging this difference in the definition, a disability weight specific to noise-induced sleep disturbance was sought after. Based on consensus of the experts of Switzerland, Knoblauch/MüllerWenk proposed 0.089 (C.I. 0.060; 0.120). This value is slightly smaller than that of primary insomnia (0.089 versus 0.100), and can be used as the best estimate of disability weight for noise-induced sleep disturbance. Celia Rodrigues (WHO) presented preliminary results of DALY estimation for noise-related sleep disturbance applying Miedema’s exposure-response relation... Three disability weights (0.02, 0.01, and 0.12) were considered. ... The meeting agreed that the DALYs for noise-induced sleep disturbance will be estimated with disability weight as 0.089." BUT see also the detailled discussion by Andreas Knoblauch and Ruedi Müller-Wenk on disability weights on pages 19-24, as well as further methodological discussion on pages 31-38.
sleep disturbance	severe (highly sleep-disturbed)	0.07	WHO 2009	See entire Ch. 4.9.	4.9.4 CONCLUSIONS "...The best estimate for a mean disability weight for self-reported sleep disturbance due to road traffic noise was 0.055 (CI: 0.039; 0.071) according to Müller-Wenk (2002), whilst our recheck based on a comparison with insomnia resulted in a disability weight of 0.09 (CI: 0.06; 0.12). The higher disability weight according to the second approach might be caused by the fact that in this second approach, there was a stronger focus on “the person’s condition during the day after the sleep-disturbed night”. The above figures compare reasonably with a study published by van Kempen (1998), cited in Knol and Staatsen (2005:46), where a severity weight of 0.10 for severe sleep disturbance was found, based on the judgement of 13 medical experts according to the protocol of Stouthard et al. (1997). 96 EFFECTS ON HEALTH Nachtlaerm_2009_7:Nachtlaerm 31.08.2009 11:08 Uhr Seite 96NIGHT NOISE GUIDELINES FOR EUROPE In conclusion, a mean disability weight of 0.07 is proposed for self-reported sleep disturbance due to road noise or similar ambient noise. This disability weight can be used in connection with the equations of section 4.1 of this chapter for highly sleep- disturbed persons."
hearing loss	severe NIHL (noise-induced hearing loss): Hearing loss >41 dB	0.25	WHO 2005	Box 2 on page 12
tinnitus	severely annoying (disabling) tinnitus	0.122	WHO 2005	Page 7. See also Box 2 on page 12	"The group recommends two disability weights to match with whichever data is available for calculation: one for general tinnitus prevalence data, one for annoying (disabling) tinnitus. For moderately to severely annoying tinnitus, the analogy is made with chronic pain. Chronic pelvic pain has a disability weight of 0.122 (global burden of disease 1990, WHO) whereas low back pain caused by chronic intervertebral disc has a disability weight of 0.121 (range 0.103- 0.125) (global burden of disease 1990, WHO). Primary insomnia have a disability weight of 0.100 while a mild depressive episode has a disability weight of 0.140. As tinnitus may induce in some cases any of these two consequences, an interpolation in those ranges seems reasonable. Thus, a disability weight of 0.120 is suggested. On could argue that this disability weight could be used for any annoying (disabling) tinnitus, including mildly annoying tinnitus. For global prevalence of tinnitus without reference to its severity, a global disability weight of 0.012 is suggested as a majority of people declaring tinnitus in surveys will either have spontaneous remission or adapt easily. ... On the other hand, only a small proportion of persons reporting ever having tinnitus will be disabled. A disability weight of 0.012 was proposed based on an estimated 10% who become moderate to severe sufferers."
tinnitus	tinnitus without reference to severity	0.012	WHO 2005	Page 7. See also Box 2 on page 12
hypertension		0.352	Stassen et al 2008		"The disability weight for hypertension and ischemic heart diseases is set at 0.352 (Mathers et al., 1999) and 0.35 (de Hollander et al., 1999)."
hypertension		0.201 (Eur A)	GBD 2002	Annex Table 5a
hypertensive heart disease	cases	0.243 (global average)	Lopez et al 2006	Table 3A.6	Range: 0.201–0.300
hypertensive heart disease	cases, untreated	0.323	Lopez et al 2006	Table 3A.6	"Provisional disability weights based on GBD 1990 or Netherlands weights for comparable health states."
hypertensive heart disease	cases, treated	0.171	Lopez et al 2006	Table 3A.6	"Provisional disability weights based on GBD 1990 or Netherlands weights for comparable health states."
primary insomnia		0.1	GBD 2002	Annex Table 5a
acute myocardial infarction		0.405 (Eur A)	GBD 2002	Annex Table 5a
acute myocardial infarction		0.437 (global average)	Lopez et al 2006	Table 3A.6
ischaemic heart disease (IHD)	hospital admission	0.35	de Hollander et al 1999	Table 2

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Severity weights for noise outcomes. Opasnet . [1]. Accessed 25 Nov 2024.