Table 3.

Results (all results given in grams of carbon dioxide equivalents [gCO2eq])

	Green Impact Toolkit recommendation:	Standard practice:
	Emailing	Posting
E-mailing an appointment notice vs posting an appointment notice	0.8	10.6
	Emailing	Posting
E-mailing a referral letter vs posting a referral letter	4.1	22.2
	Keeping and reusing scrap paper	Disposing scrap paper
Keeping and reusing scrap paper used in patient management vs disposing of scrap paper and using new paper	2.8	3.0
	Shredding only confidential documents	Shredding all documents
Shredding only confidential documents used in patient management vs shredding all documents	3.2	6.3
	Re-using old envelopes	Buying new envelopes
Reusing old envelopes used in patient correspondence vs buying new envelopes	1.9	3.1
	Using paper-only envelopes	Using envelopes with plastic windows
Using paper-only envelopes in patient correspondence vs using envelopes with plastic windows	2.9	3.6
	Printing and photocopying on double sides of paper	Printing and photocopying on single sides of two separate sheets of paper
Printing and photocopying on double sides of paper used in patient management vs printing and photocopying on single sides of two separate sheets of paper	7.0	10.0
	Dual flush	Regular single flush
Using dual flush toilets vs using regular single flush toilets	1.8	4.9
	Using water from a rainwater collection	Using water from the mains supply
Using water from a rainwater collection tank vs using water from the mains supply	3.3	33.3
	Autoclaving, shredding and recycling used toothbrushes	Incinerating toothbrush waste
Autoclaving, shredding and recycling used toothbrushes vs incinerating toothbrush waste	1.9	47.6
	Re-using and sterilising a metal air-water syringe tip	Using a disposable air-water syringe tip at each patient visit
Reusing and sterilising a metal air-water syringe tip vs using a disposable air-water syringe tip at each patient visit	20	58.1
	Green Impact Toolkit recommendation	Standard practice
	Using running tap water	Using a dishwasher	Using a filled plugged sink of water
Using running tap water vs using a dishwasher vs using a filled plugged sink of water to wash dishes in the staff canteen	10.1	76.7	35.7