Characteristics of included prospective cohort studies in the meta-analysis of dietary fish and n-3 polyunsaturated fatty acid intake and type 2 diabetes.

Abbreviations: Q: quintile; ref: reference; LC n-3 PUFA: long-chain n-3 polyunsaturated fatty acids (C22∶6n–3+ C20∶5n-3).缩写说明：Q：五分位数（quintile）；ref：参照（reference）；LC n-3 PUFA：长链n-3多不饱和脂肪酸（long-chain n-3 polyunsaturated fatty acids，即C22∶6n–3 + C20∶5n-3）