1Hu, FB, Rimm, E, Smith-Warner, SA, et al. (1999) Reproducibility and validity of dietary patterns assessed with a food-frequency questionnaire. Am J Clin Nutr 69, 243–249.
2Hu, FB (2002) Dietary pattern analysis: a new direction in nutritional epidemiology. Curr Opin Lipidol 13, 3–9.
3Northstone, K & Emmett, PM (2008) A comparison of methods to assess changes in dietary patterns from pregnancy to 4 years post-partum obtained using principal components analysis. Br J Nutr 99, 1099–1106.
4Togo, P, Heitmann, BL, Sorensen, TI, et al. (2003) Consistency of food intake factors by different dietary assessment methods and population groups. Br J Nutr 90, 667–678.
5Newby, PK, Muller, D, Hallfrisch, J, et al. (2004) Food patterns measured by factor analysis and anthropometric changes in adults. Am J Clin Nutr 80, 504–513.
6Schatzkin, A, Kipnis, V, Carroll, R, et al. (2003) A comparison of a food frequency questionnaire with a 24-hour recall for use in an epidemiological cohort study: results from the biomarker-based Observing Protein and Energy Nutrition (OPEN) study. Int J Epidemiol 32, 1054–1062.
7Okubo, H, Murakami, K, Sasaki, S, et al. (2010) Relative validity of dietary patterns derived from a self-administered diet history questionnaire using factor analysis among Japanese adults. Public Health Nutr 13, 1080–1089.
8Weismayer, C, Anderson, JG & Wolk, A (2006) Changes in the stability of dietary patterns in a study of middle-aged Swedish women. J Nutr 136, 1582–1587.
9Rashid Khani, B, Ye, W, Terry, P, et al. (2004) Reproducibility and validity of major dietary patterns among Swedish women assessed with a food-frequency questionnaire. J Nutr 134, 1541–1545.
10Crozier, SR, Inskip, HM, Godfrey, KM, et al. (2008) Dietary patterns in pregnant women: a comparison of food-frequency questionnaires and 4 d prospective diaries. Br J Nutr 99, 869–875.
11Mirmiran, P, Esfahani, FH, Mehrabi, Y, et al. (2010) Reliability and relative validity of an FFQ for nutrients in the Tehran lipid and glucose study. Public Health Nutr 13, 654–662.
12Esfahani, FH, Asghari, G, Mirmiran, P, et al. (2010) Reproducibility and relative validity of food group intake in a food frequency questionnaire developed for the Tehran Lipid and Glucose Study. J Epidemiol 20, 150–158.
13Azizi, F, Rahmani, M, Emami, H, et al. (2002) Cardiovascular risk factors in an Iranian urban population: Tehran Lipid and Glucose Study (phase 1). Soz Praventivmed 47, 408–426.
14Kimiagar, M (1995) National Food Consumption Survey. Teharan: National Nutrition and Food Technology Research Institute.
15Mirmiran, P, Azadbakht, L & Azizi, F (2006) Dietary diversity within food groups: an indicator of specific nutrient adequacy in Tehranian women. J Am Coll Nutr 25, 354–361.
16Willett, W & Lenart, E (1998) Reproducibility and validity of food frequency questionnaires. In Nutritional Epidemiology, 2nd ed. . New York: Oxford University Press.
17Ghafarpour, M, Houshiar-Rad, A & Kianfar, H (1999) The Manual for Household Measures, Cooking Yields Factors and Edible Portion of Food. Tehran: Keshavarzi Press.
18Azar, M & Sarkisian, E (1980) Food Composition Table of Iran. Tehran: National Nutrition and Food Research Institute of Shaheed Beheshti University.
20Esmaillzadeh, A & Azadbakht, L (2008) Major dietary patterns in relation to general obesity and central adiposity among Iranian women. J Nutr 138, 358–363.
21Rezazadeh, A, Rashidkhani, B & Omidvar, N (2009) Association of major dietary patterns with socioeconomic and lifestyle factors of adult women living in Tehran, Iran. Nutrition 26, 337–341.
22Willett, W (1998) Nutritional Epidemiology. New York: Oxford University Press.
23Kim, J & Mueller, C (1978) Factor Analysis: Statistical Methods and Practical Issues. Beverly Hills, CA: Sage Publications, Inc.
24Rimm, E, Giovannucci, E, Stampfer, M, et al. (1992) Reproducibility and validity of an expanded self-administered semiquantitative food frequency questionnaire among male health professionals. Am J Epidemiol 135, 1114–1126.
25Shu, X, Yang, G, Jin, F, et al. (2004) Validity and reproducibility of the food frequency questionnaire used in the Shanghai Women's Health Study. Eur J Clin Nutr 58, 17–23.
26Rosner, B & Willett, W (1988) Interval estimates for correlation coefficients corrected for within-person variation: implications for study design and hypothesis testing. Am J Epidemiol 127, 377–386.
27Martin Bland, J & Altman, D (1986) Statistical methods for assessing agreement between two methods of clinical measurement. Lancet 327, 307–310.
28Ambrosini, GL, O'Sullivan, TA, de Klerk, NH, et al. (2011) Relative validity of adolescent dietary patterns: a comparison of a FFQ and 3 d food record. Br J Nutr 105, 625–633.
29Harika, RK, Cosgrove, MC, Osendarp, SJM, et al. (2011) Fatty acid intakes of children and adolescents are not in line with the dietary intake recommendations for future cardiovascular health: a systematic review of dietary intake data from thirty countries. Br J Nutr 106, 307–316.
30Hooper, L, Summerbell, CD, Higgins, JP, et al. (2001) Reduced or modified dietary fat for preventing cardiovascular disease. The Cochrane Database of Systematic Reviews 2001 , CD002137.
31Slattery, M, Boucher, K, Caan, B, et al. (1998) Eating patterns and risk of colon cancer. Am J Epidemiol 148, 4–16.
32Sánchez-Villegas, A, Delgado-Rodríguez, M, Martínez-González, M, et al. (2003) Gender, age, socio-demographic and lifestyle factors associated with major dietary patterns in the Spanish Project SUN (Seguimiento Universidad de Navarra). Eur J Clin Nutr 57, 285–292.
33Northstone, K & Emmett, PM (2008) Are dietary patterns stable throughout early and mid-childhood? A birth cohort study. Br J Nutr 100, 1069–1076.
34Martínez, M, Marshall, J & Sechrest, L (1998) Invited Commentary: factor analysis and the search for objectivity. Am J Epidemiol 148, 17–19.