Higher showed no clear difference in asthma ‐ infant incidence compared with lower PUFA intake (low certainty).
It is very uncertain whether higher changes dermatitis/eczema ‐ infant incidence compared with lower PUFA intake (very low certainty).
It is very uncertain whether higher changes allergic rhinitis ‐ infant incidence compared with lower PUFA intake (very low certainty).
It is very uncertain whether higher changes food allergy ‐ infant incidence compared with lower PUFA intake (very low certainty).
It is very uncertain whether higher changes all allergic disease ‐ childhood incidence compared with lower PUFA intake (very low certainty).
It is very uncertain whether higher changes asthma ‐ childhood incidence compared with lower PUFA intake (very low certainty).
It is very uncertain whether higher changes dermatitis/eczema ‐ childhood incidence compared with lower PUFA intake (very low certainty).
It is very uncertain whether higher changes food allergy ‐ childhood incidence compared with lower PUFA intake (very low certainty).
Adults: higher dose/longer course showed no clear difference in re‐admission in compared with lower dose/shorter course (low certainty).
Children: higher dose/longer course showed no clear difference in asthma symptoms Symptom free by 7 days compared with lower dose/shorter course (moderate certainty).
Children: higher dose/longer course showed no clear difference in new exacerbation during compared with lower dose/shorter course (low certainty).
Children: higher dose/longer course showed no clear difference in all adverse events compared with lower dose/shorter course (moderate certainty).
Adults: higher dose/longer course showed no clear difference in asthma symptoms Complete resolution by day 28 compared with lower dose/shorter course (low certainty).
It is very uncertain whether adults: higher dose/longer course changes new exacerbation in compared with lower dose/shorter course (very low certainty).
It is very uncertain whether adults: higher dose/longer course changes all adverse events compared with lower dose/shorter course (very low certainty).