Table 3 Number and percentage of papers included in the update for each domain categories

NEURO

 Amyotrophic lateral sclerosis

2

5.7

3

4.3

 Dementia

21

60.0

24

34.8

 Motor neuron disease

0

0.0

1

1.4

 Multiple sclerosis

11

31.4

30

43.5

 Paediatric multiple sclerosis

0

0.0

2

2.9

 Parkinson

5

14.3

12

17.4

ENV

 BC

4

11.4

4

5.8

 CO

1

2.9

7

10.1

 Cu

0

0.0

1

1.4

 Humidity

2

5.7

5

7.2

 Index

3

8.6

5

7.2

 Mg

0

0.0

2

2.9

 Mn

0

0.0

1

1.4

 No_x

15

42.9

25

36.2

 O₃

8

22.9

12

17.4

 Pb

0

0.0

5

7.2

 PM₁

1

2.9

1

1.4

 PM₁₀

10

28.6

16

23.2

 PM₂₅

23

65.7

31

44.9

 Precipitation

0

0.0

6

8.7

 Pressure

0

0.0

1

1.4

 Rn

0

0.0

1

1.4

 SO₂

2

5.7

8

11.6

 Sun exposure

2

5.7

15

21.7

 Temperature

4

11.4

12

17.4

GEO

 Administrative

3

8.6

19

27.5

 Clustering

2

5.7

4

5.8

 GIS

7

20.0

21

30.4

 Latitude

3

8.6

8

11.6

 Longitude

2

5.7

3

4.3

 Remote sensing

16

45.7

29

42.0

 Residence

29

82.9

43

62.3

 Spatial interpolation

6

17.1

7

10.1