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| Serial number | Author | Title of paper | Reason for exclusion |
|
| 1 |
Hodge et al., 1996 [17] | Consumption of oily fish and childhood asthma risk | Case control study |
|
| 2 | Hodge et al., 1998 [21] | Effect of dietary intake of omega-3 and omega-6 fatty acids on severity of asthma in children | Asthma severity scoring was based on symptoms while, in other study which reported asthma scoring system, it was based on auscultatory findings, hence excluded from meta-analysis |
|
| 3 | Nagakura et al., 2000 [22] | Dietary supplementation with fish oil rich in omega-3 polyunsaturated fatty acids in children with bronchial asthma (asthma severity score) | Asthma severity scoring was based on auscultatory findings while, in other study which reported asthma scoring system, it was based on symptoms, hence excluded from meta-analysis |
|
| 4 | Mihrshahi et al., 2004 [23] | Effect of omega-3 fatty acid concentrations in plasma on symptoms of asthma at 18 months of age | Assessed association of plasma level of omega-3 FA after giving tuna fish and margarine oil with incidence of asthma |
|
| 5 | Chan-Yeung et al., 2005 [24] | Canadian childhood asthma primary prevention study: outcomes at 7 years of age | Did not use omega-3 FA as intervention |
|
| 6 | Almqvist et al., 2007 [25] | Omega-3 and omega-6 fatty acid exposure from early life does not affect atopy and asthma at age 5 years | Observational study |
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| 7 | Al Biltagi et al., 2009 [26] | Omega-3 fatty acids, vitamin C, and Zn supplementation in asthmatic children: a randomized self-controlled study | Simultaneously used omega-3 FA, vit. C, and Zn supplementation |
|
| 8 | Manley et al., 2011 [27] | High-dose docosahexaenoic acid supplementation of preterm infants: respiratory and allergy outcomes | Supplementation given to mothers and EBM (expressed breast milk) fed to the babies |
|
| 9 | Lang et al., 2013 [28] | Nutrigenetic response to omega-3 fatty acids in obese asthmatics (NOOA): rationale and methods | Results not stated |
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