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. 2016 Dec 19;4(4):e135. doi: 10.2196/mhealth.5931

Table 2.

Search terms used for secondary Google search using the apps filter.

Search # Search terms Results Downloaded
1 Carbon emissions AND health 60 5

Carbon emissions AND travel 93 3

Carbon emissions AND food 51 0

Carbon emissions AND diet 5 0

Search c & d 16 0

Search a & b & e 15 0
2 Carbon emissions AND food AND travel 33 1
3 Health AND carbon emissions AND diet AND activity 19 1
4 Carbon footprint AND health 62 0

Carbon footprint AND diet 18 0

Carbon footprint AND food 70 2

Carbon footprint AND travel 87 1

Carbon footprint AND transport 63 1

Search d & e 59 0

Search a & f 18 0

Search a & c 43 0

Search g & h 5 0
5 CO2aAND health 96 2

CO2 AND travel 78 1

CO2 AND food 102 0

CO2 AND diet 43 0

Search a & b & d 11 0
6 Greenhouse gas emissions AND travel 32 1

Greenhouse gas emissions AND transport 57 0

Greenhouse gas emissions AND food 16 0

Greenhouse gas emissions AND diet 6 0

Greenhouse gas emissions AND health 24 0

Search a & b & c & d & e 5 0

aCO2: carbon dioxide