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Australian Health Trends Introduction

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Australian Health Trends Introduction

A youth health team is preparing a clear, evidence-based briefing for an Australian community. Use the fictional data and short report below to investigate what trends can—and cannot—tell us. All figures are invented for this activity.

Read the briefing

A health trend is a pattern of change—or stability—in health, health behaviours or related conditions across a population over time. A single year's result is a snapshot; several comparable snapshots can reveal a trend. Trends can help governments and communities decide where prevention, services or further research may be needed. The fictional Coastal District team recorded the share of surveyed 16–17-year-olds who met its physical activity guideline and the share who reported vaping in the past month. The same survey method was used each year, but the respondents were not necessarily the same people. These results describe this sample only; they do not prove what caused any change or automatically represent all young Australians.

Year

Met physical activity guideline

Vaped in past month

2021

42%

2023

45%

13%

2025

48%

16%

Investigate the evidence

Use the briefing and results table. Show clear reasoning and distinguish what the data show from what you infer.

1.Which statement best defines a health trend?

A popular health product that many people buy
A pattern of change or stability in population health over time
A diagnosis made for one person at one appointment
A prediction that must come true

2.From 2021 to 2025, what happened to the percentage meeting the physical activity guideline? Give the change in percentage points.

3.Which measure shows the larger percentage-point change between 2021 and 2025: meeting the physical activity guideline or past-month vaping? Calculate both changes.

4.True or false: Because the figures rise at each survey, the data prove that vaping caused the increase in physical activity.

TrueFalse

5.Complete the sentence: A result from one survey year is a ; results from comparable surveys across several years may reveal a .

6.The team says it used the same survey method each time. Why does consistency in data collection make comparisons more useful?

7.The survey respondents were not necessarily the same people each year. Name one conclusion the team can reasonably make and one conclusion it cannot make from these results.

8.A local headline reads, “Young Australians are vaping more.” Give two questions you would ask before deciding whether this survey supports that national claim.

9.Why might a health service examine trends over several years rather than relying on only the 2025 result?

10.The youth health team has funding for one next step. Propose a useful action informed by the results, and name one extra piece of evidence the team should gather before making a major decision.