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Table 7 Opinion nominal variables

From: Acceptability of genetically engineered algae biofuels in Europe: opinions of experts and stakeholders

Variable name

Answers

Personal attitude as final consumer

Opinion about being final consumer of GE algae biofuel

Yes

No

Do not know

Willingness to pay more money if higher engine performances were achieved compared to established biofuels

Yes, < 5%

Yes, 5–10% more

Yes, 10–20% more

Yes, > 20%

Yes, do not know how much more

No

Willingness to pay more money if environmental advantages were achieved compared to fossil fuels

Suggestions to improve general social acceptance

Regulations before any genome engineered species is implemented

Yes

No

Higher or same economic benefits than using fossil fuels

Clear evidence of benefits

Clear communication of risks and benefits of genome engineering technologies

Rigorous risk assessments of GM algae, involving scientists with minimal conflicts of interest, independent peer review, and public participation

Closed production systems with high security standards

Use of genetic markers

Minor survivability compared to natural strains

Use of new precise gene editing tools instead of traditional genome engineering