The phrase "an extra effect of" is correct and usable in written English.
It can be used when discussing an additional impact or consequence of a particular action, event, or phenomenon.
Example: "The new policy had an extra effect of increasing employee morale in the workplace."
Alternatives: "an additional impact of" or "a supplementary effect of".
Risk factors which appear in 'normal' primary care (gender, age, insurance type, ethnicity) did not have any extra effect of the disaster: post-disaster differences between these groups may be explained by pre-disaster differences.
Our results show, however, that there is also likely to be an independent extra effect of heat waves that is not captured by hot days, e.g. an effect modification.
For an extra special effect of rattan jyoth heat the ghee in a pan, wet a muslin cloth with water and squeeze lightly, tie up the rattan jyoth/beetroot in the cloth, add to the ghee and let it infuse for a minute.
They did see an association with the total amount of sugar a pregnant woman consumes every day, "but no extra effect of sugary beverages," said lead author Meghan B. Azad of Children's Hospital Research Institute of Manitoba in Winnipeg, Canada.
There was no extra effect of treadmill training in the faster walkers in terms of EuroQol 5Q-5D.
Contrary to hypothesis 2, no extra effect of the combined intervention compared to the separate interventions was found.
In contrast, Mimeault and coworkers found the extra effect of brief therapist contact to become negligible at three-month follow-up [ 29].
With regard to overall complications, six studies are located in the north-east quadrant [11], [12], [14], [15], [18], [22] and therefore generating extra effects of LH within a cost ratio range of $1,401 to $6,618 (figure 2b).
Moreover, the extra effects of those compounds on HCV life cycle and clinical data demonstrated that further Brazilian compounds can present extra mode of action which need to be investigated.
