癌症负担在撒哈拉以南非洲最人口众多的尼日利亚迅速上升；这一趋势可能部分归因于饮食。我们开发并验证了一个半定量的食物频率问卷 (FFQ)，用于评估尼日利亚地区的饮食。我们从尼日利亚西南部的城乡各招募了 68 名成年参与者。我们制定了一个在基线时进行问卷调查的 FFQ，并通过三个膳食回忆 (基线、基线后7天、基线后3个月) 来评估其有效性。我们计算了食物项目和宏量营养素的 Spearman 秩相关系数和能量调整消除衰减的相关系数，并评估了宏量营养素摄入四分位数的交叉分类。从基线问卷和膳食回忆的平均摄入量开始，能量调整消除衰减的食物项目相关性范围从-0.08(烟熏牛肉/山羊肉)到0.73(炸小吃)，而从所有三个膳食回忆的平均值开始，则从-0.05(烟熏牛肉/山羊肉)到0.75(烟熏鱼)。宏量营养素相关性范围从 0.15(脂肪) 到 0.37(纤维素) (2DR)，从 0.08(脂肪) 到 0.41(碳水化合物) (3DR)。与同一四分位数相同的参与者的百分比范围从 16.4% (脂肪) 到 32.8% (纤维素、蛋白质) (2DR)，从 25.6% (脂肪) 到 34.9% (碳水化合物) (3DR)。包括相邻四分位数时，一致性得到改善，从 65.5% (碳水化合物) 到 70.5% (脂肪、纤维素) (2DR)，从 62.8% (蛋白质) 到 76.8% (碳水化合物) (3DR)。我们的半定量 FFQ 在尼日利亚西南部的成年人中用于排名某些食物和宏量营养素的摄入是合理有效的。© 2023。作者，独家许可 Springe Nature Switzerland AG。

Cancer burden is rising rapidly in Nigeria, the most populous country in sub-Saharan Africa; this trend may in part be attributable to diet. We developed and validated a semi-quantitative food frequency questionnaire (FFQ) to assess regional diet in Nigeria.We recruited 68 adult participants from rural and urban settings in South West Nigeria. We developed an FFQ administered at baseline and assessed its validity using 3 dietary recalls (baseline, 7 days post baseline, 3 months post baseline). We calculated Spearman's rank correlation coefficients and energy-adjusted de-attenuated correlation coefficients for food items and macronutrients. We evaluated cross-classification using quartiles of macronutrient intake.Energy-adjusted de-attenuated food item correlations between the FFQ and dietary recalls ranged from -0.08 (smoked beef/goat) to 0.73 (fried snacks) for the average intake from the first 2 recalls (2DR) and from -0.05 (smoked beef/goat) to 0.75 (smoked fish) for the average of all 3 recalls (3DR). Macronutrient correlations ranged from 0.15 (fat) to 0.37 (fiber) for the 2DR and from 0.08 (fat) to 0.41 (carbohydrates) for the 3DR. The percent of participants classified in the same quartile ranged from 16.4% (fat) to 32.8% (fiber, protein) for the 2DR and from 25.6% (fat) to 34.9% (carbohydrates) for the 3DR. Agreement improved when including adjacent quartiles, from 65.5% (carbohydrates) to 70.5% (fat, fiber) for the 2DR and from 62.8% (protein) to 76.8% (carbohydrate) for the 3DR.Our semi-quantitative FFQ was reasonably valid for ranking intake of certain foods and macronutrients in adults in South West Nigeria.© 2023. The Author(s), under exclusive licence to Springer Nature Switzerland AG.