12 men Not reported Lewis et al., Randomized 1. 9.6 9.2 7.2 Initial: 12, final: 12 Mean age: 45 1981 crossover design No dropouts years 2. 9.4 9.2 7.3 reported with three United Kingdom interventions 3. 13.4 13.2 11.7 Experimental period: 35 days 8 men Canola Council of McDonald et al., Randomized 1. 5.1 20.2 10.3 Initial: 8, final: 8 Canada Age: 19-32 No dropouts 1989 crossover design years 2. 6.8 7.4 21.6 reported with two Canada interventions Experimental period: 18 days 25 men and 34 The Netherlands Mensink and Randomized 1. 9.3 23.7 4.4 0.0 Initial: 59, final: 59 women Nutrition No dropouts Foundation Katan, 1990 crossover design Mean age: 26 2. 19.4 13.6 3.0 0.7 reported years The Netherlands with two Ministry of Welfare, The Netherlands interventions Public Health, and Cultural Affairs
Lewis et al., 1981 United Kingdom Randomized crossover design with three interventions Experimental period: 35 days 1. 2. 3. 9.6 9.4 13.4 9.2 9.2 13.2 7.2 7.3 11.7 Initial: 12, final: 12 No dropouts reported 12 men Mean age: 45 years Not reported McDonald et al., 1989 Canada Randomized crossover design with two interventions Experimental period: 18 days 1. 2. 5.1 6.8 20.2 7.4 10.3 21.6 Initial: 8, final: 8 No dropouts reported 8 men Age: 19-32 years Canola Council of Canada Mensink and Katan, 1990 The Netherlands Randomized crossover design with two interventions 1. 2. 9.3 19.4 23.7 13.6 4.4 3.0 0.0 0.7 Initial: 59, final: 59 No dropouts reported 25 men and 34 women Mean age: 26 years The Netherlands Nutrition Foundation The Netherlands Ministry of Welfare, Public Health, and Cultural Affairs
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