Topic 1: Stressors in the Environment: Black & Black (2007) Flashcards

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1
Q

(Topic 1: Black & Black) Aim: State the 2 core questions that Black & Black wanted to investigate.

A

1) Is health-related quality of life worse in a community chronically exposed to aircraft noise than in a community not exposed?
2) Is long-term aircraft noise exposure associated with elevated blood pressure in adults via noise stress as a mediating factor?

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2
Q

(Topic 1: Black & Black) Sample: How many addresses and where (roughly) were the questionnaires sent out to?

A

1500 addresses in 2 areas of Sydney, Australia.

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3
Q

(Topic 1: Black & Black) Sample: How many responses were there? And how many questionnaires were returned fully completed?

A

796 responses.
704/796 responses were fully completed.

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4
Q

(Topic 1: Black & Black) Sample: State the 4 sections in the questionnaire.

A

1) Health
2) Hypertension
3) Annoyance from noise
4) Other factors, such as employment status and smoking/alcohol consumption

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5
Q

(Topic 1: Black & Black) Sample: Describe area 1.

A

Close to the airport, that on an average day experienced 50 aircraft noise events with a volume louder than 70 decibels.

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6
Q

(Topic 1: Black & Black) Sample: Describe area 2.

A

South Penrith, 55km from the airport. No aircraft sound but matched on socio-economic indices.

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7
Q

(Topic 1: Black & Black) Sample: What was the age range of the participants?

A

15-87 years of age.

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8
Q

(Topic 1: Black & Black) Method: Describe the ‘health’ section in the questionnaire.

A

Measured in relation to physical functioning, general health, vitality, and mental health (questions based on SF-36 instrument).

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9
Q

(Topic 1: Black & Black) Method: Describe the ‘hypertension’ section in the questionnaire.

A

Accessed through closed-end questions about medical histories regarding cholesterol and high blood pressure.

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10
Q

(Topic 1: Black & Black) Method: Describe the ‘annoyance from noise’ section in the questionnaire.

A

Measured in 2 stages:
1) Identify noise sources while at home.
2) Rate them from 0-10 regarding how annoying they are (0 being not at all annoying and 10 being extremely annoying).

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11
Q

(Topic 1: Black & Black) Method: Describe the ‘other factors’ section in the questionnaire.

A

May have a confounding effect on the researcher’s ability to assess the relationship between aircraft noise and health.
Such as employment status, exercise activities, smoking status, alcohol consumption, nutrition intake and demographic characteristics.

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12
Q

(Topic 1: Black & Black) Results: What was the mean noise annoyance score for area 1?

A

6.27

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13
Q

(Topic 1: Black & Black) Results: What was the mean noise annoyance score for area 2?

A

1.03

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14
Q

(Topic 1: Black & Black) Results: Explain the results in relation to core question 1.

A

The mean health score was lower for those in the aircraft noise exposure group than the control group.

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15
Q

(Topic 1: Black & Black) Results: Explain the results in relation to core question 2.

A

Long-term aircraft noise exposure was significantly associated with chronic stress and high blood pressure.

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