CookbookResearch and civic lifeNo. 46
A literature reviewpapers read, compared and synthesised into a chapter
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Green space and adolescent mental healthMeasuring green space exposure
15of 16
Evidence tableNDVI in a buffer, 7 studies
Insight, 1 note, 190 words
The seven studies in this theme that measure exposure as mean NDVI in a buffer round the home, in section order. Rows name the section they came from; check a cell there before quoting it.
Residential NDVI and adolescent mental health: seven studies
| Study (section) | Design | n | Finding |
|---|---|---|---|
| Haugland 2019 (2) | Cohort, 2 waves, 300 m | 1,960 | No association |
| Silva 2017 (3) | Cross-sectional, 1 km | 850 | Lower emotional score |
| Achterberg 2024 (4) | Cohort, 4 waves, 500 m | — | Fewer emotional problems |
| Moreau 2020 (5) | Cohort, 3 waves, 500 m | 3,400 | Lower internalising (girls) |
| ✓Okafor 2023 (6) | Cohort, 2 waves, 500 m | 4,212 | Lower emotional score at 17 |
| Tanaka 2022 (8) | Cross-sectional, 250 m | 12,030 | Fewer depressive symptoms |
| Kowalczyk 2021 (11) | Waves not stated, 1 km | 1,120 | No association |
Design gives the waves and the NDVI buffer; n is the analysed sample, and a dash means the paper does not report it. Settings: Norway, Portugal, France, four Scandinavian cities, Japan and Poland; Achterberg reports neither its sample size nor its setting. Kowalczyk calls the design longitudinal without saying how many waves. Marked: Okafor, the largest longitudinal sample (0.3 points lower per IQR of NDVI) and the paper the argument leans on.
Residential NDVI and adolescent mental health: seven studies
| Study (section) | Design | n | Finding |
|---|---|---|---|
| Haugland 2019 (2) | Cohort, 2 waves, 300 m | 1,960 | No association |
| Silva 2017 (3) | Cross-sectional, 1 km | 850 | Lower emotional score |
| Achterberg 2024 (4) | Cohort, 4 waves, 500 m | — | Fewer emotional problems |
| Moreau 2020 (5) | Cohort, 3 waves, 500 m | 3,400 | Lower internalising (girls) |
| ✓ Okafor 2023 (6) | Cohort, 2 waves, 500 m | 4,212 | Lower emotional score at 17 |
| Tanaka 2022 (8) | Cross-sectional, 250 m | 12,030 | Fewer depressive symptoms |
| Kowalczyk 2021 (11) | Waves not stated, 1 km | 1,120 | No association |
Design gives the waves and the NDVI buffer; n is the analysed sample, and a dash means the paper does not report it. Settings: Norway, Portugal, France, four Scandinavian cities, Japan and Poland; Achterberg reports neither its sample size nor its setting. Kowalczyk calls the design longitudinal without saying how many waves. Marked: Okafor, the largest longitudinal sample (0.3 points lower per IQR of NDVI) and the paper the argument leans on.
```element table
{
"caption": "Residential NDVI and adolescent mental health: seven studies",
"columns": [
{
"label": "Study (section)",
"align": "left"
},
{
"label": "Design",
"align": "left"
},
{
"label": "n",
"align": "right",
"numeric": true
},
{
"label": "Finding",
"align": "left"
}
],
"rows": [
[
"Haugland 2019 (2)",
"Cohort, 2 waves, 300 m",
"1,960",
"No association"
],
[
"Silva 2017 (3)",
"Cross-sectional, 1 km",
"850",
"Lower emotional score"
],
[
"Achterberg 2024 (4)",
"Cohort, 4 waves, 500 m",
"—",
"Fewer emotional problems"
],
[
"Moreau 2020 (5)",
"Cohort, 3 waves, 500 m",
"3,400",
"Lower internalising (girls)"
],
[
"Okafor 2023 (6)",
"Cohort, 2 waves, 500 m",
"4,212",
"Lower emotional score at 17"
],
[
"Tanaka 2022 (8)",
"Cross-sectional, 250 m",
"12,030",
"Fewer depressive symptoms"
],
[
"Kowalczyk 2021 (11)",
"Waves not stated, 1 km",
"1,120",
"No association"
]
],
"pick": 4,
"notes": "Design gives the waves and the NDVI buffer; n is the analysed sample, and a dash means the paper does not report it. Settings: Norway, Portugal, France, four Scandinavian cities, Japan and Poland; Achterberg reports neither its sample size nor its setting. Kowalczyk calls the design longitudinal without saying how many waves. Marked: Okafor, the largest longitudinal sample (0.3 points lower per IQR of NDVI) and the paper the argument leans on."
}
```Five of seven report an association in the same direction; Haugland and Kowalczyk find none. Worth a Question: what do those two share that the others do not?
How it works
Your supervisor asks which cohort studies measured green space by satellite and which by distance to a park, and you open six PDFs to answer. Your assistant drafts a section per paper, you check each against the source, and an evidence table answers that question at a glance. The synthesis at the top of each theme is yours.