3. Methods
Three hundred and sixty three respondents were proportionate selected randomly from four urban areas representing four zones in Peninsular Malaysia namely Alor Setar (Kedah), Kuantan (Pahang), Shah Alam (Selangor) and Melaka by using cluster sampling, resulting in response rate of 72.6%. The respondents were among food handlers in primary school canteens. This study employed self administered questionnaire for data collection. Respondents could attend at their own convenient time without pressure (Sekaran, 2010).