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| Intake of liquid dairy products among the fourth grade studentsin Nanjing City |
| WANG Chenchen1, FU Aihua2, JIA Qiuping3, ZHOU Hairong1, WANG Weiwei1, HONG Xin1
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1. Department of Non-communicable Disease Control and Prevention, Nanjing Center for Disease Control and Prevention, Nanjing, Jiangsu 210003, China;
2. Lishui Center for Disease Control and Prevention, Nanjing, Jiangsu 211299, China;
3. Jiangning Center for Disease Control and Prevention, Nanjing, Jiangsu 211199, China |
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Abstract Objective To investigate the intake of liquid dairy products and identify its influencing factors among the fourth grade students in Nanjing City. Methods The fourth grade students were selected as the study subjects in Nanjing City using a multi-stage random cluster sampling method in September 2020. Their general information, frequency of liquid dairy product intake one week prior to survey and mean intake amount per time were collected. According to the 2016 Dietary Guidelines for Chinese Residents, weekly intake of liquid dairy products of 2 100 g and greater was defined eligible. Factors affecting the frequency and amount of liquid dairy product intake were identified using multivariable logistic regression analysis. Results A total of 2 268 questionnaires were allocated and 2 216 valid questionnaires were recovered, with an effective recovery rate of 97.71%. The respondents included 1 199 boys ( 54.11% ) and 1 017 girls ( 45.89% ). The frequency of liquid dairy product intake was (6.41±4.86) times per week, and the median intake amount was 1 250.00 g per week (interquartile range, 1 750.00 g per week). There were 607 students ( 27.39% ) consuming liquid dairy products of 2 100 g and greater a week, and 1 016 students ( 45.85% ) consumed liquid dairy products for 7 times and more a week. Multivariable logistic regression analysis showed that living in urban areas ( OR=1.204, 95%CI: 1.005-1.443 ), knowing nutrition labels ( OR=1.221, 95%CI: 1.021-1.460 ), periodical measurement of body weight (OR=1.486, 95%CI: 1.098-2.011) and restricted intake of sugar-containing drinks ( OR=1.264, 95%CI: 1.005-1.590 ) facilitated the intake of liquid dairy products for 7 times and more a week, and students with periodical measurement of body weight were more likely to consume liquid dairy products for 2 100 g and greater a week ( OR=1.821, 95%CI: 1.240-2.676 ). Conclusions Inadequate intake of liquid dairy products is found among the fourth grade students in Nanjing City. Residence, awareness of nutrition labels, periodical measurement of body weight, and parental restriction of sugar-containing drink intake affect the intake of liquid dairy products.
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Received: 19 October 2021
Revised: 09 December 2021
Published: 14 February 2022
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