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Binkoski et al., 2005 USA Randomized crossover design with three interventions Experimental period: 28 days 1. 2. 3. 10.8 8.0 7.6 14.3 16.5 13.6 7.5 4.1 7.4 Initial: 31, final: 31 No dropouts reported 12 men and 19 women Mean age: 46 years National Institutes of Health National Sunflower Association Castro et al., 2000 Spain Randomized crossover design with two interventions Experimental period: 28 days 1. 2. 9.4 8.6 24.3 24.8 4.3 4.7 Initial: 22, final: 21 Reason for loss: illness (n=1) 21 men Mean age: 23 years Investigaciones de la Seguridad Social Koype Co Kris-Etherton et al., 1999 USA Randomized crossover design with four interventions 1. 2. 3. 6.7 6.7 6.7 11.5 20.2 16.3 5.8 5.8 8.6 Initial: 26, final: 22 Reason for loss: poor compliance (n=2), moved outside the area (n=2) 9 men and 13 women Mean age: 34 years The Peanut Institute