关键词: 维生素D, 佝偻病, 母乳喂养, 儿童

Abstract: 【Objective】 To investigate the rate of vitamin D supplementation and related factors in fully breasted children in Shandong province. 【Methods】 A total of 903 children who came to vaccination clinics for planned immunity and health care were selected from November 2010 to January 2011. 612 fully breasted subjects as responders. Their use of vitamin D supplementation and related factors were investigated with self-made questionnaire. 【Results】 The rate of vitamin D supplements use in fully breasted children was 76.6%. The infant intake of 166.0 to 700.0 U/day of vitamin D supplementation began at 30.0(30.0) days after birth and disused at 9.0(7.0) months. The vitamin D supplements adding rate of children who born after one week, 1 to 2 weeks, 2 to 4 weeks and more than 4 weeks was 1.7%, 3.4%, 9.3%and 85.5% respectively. The prevalence of vitamin D supplement disuse was 78.4% in infants within 1 year old , 16.6% during 1 to 2 years old and 5.1% during 2 to 3 years old. The multi-factors Logistic regression analyses suggested that use of vitamin D supplements was significantly associated with ages, family income level, maternal level of education and nutrient intake during pregnancy(OR=0.673,0.706,1.651,1.646). 【Conclusions】 The vitamin D supplements use in fully breasted children is widespread, but its application is not standard according to the requirements of domestic and international vitamin D supplements application guidelines. Age, income level and other factors affect vitamin D supplements use.

Key words: vitamin D, rickets, breastfeeding, children