Based on the data of China Adult
Chronic Disease and Nutrition Surveillance, 3903 blood samples were selected by stratified random sampling. The distribution of serum
zinc in adults with different gender, age, regional type and regional distribution were analyzed by inductively coupled plasma mass spectrometry and body mass index(BMI), exercise, smoking, drinking,
vitamin A level and other factors on serum
zinc concentration and
zinc deficiency rate. Multivariate logistic regression model was used to analyze the correlation between
zinc deficiency and the influencing factors.
RESULTS: In 2015, the median of serum
zinc in Chinese adults aged 18-60 years was 103. 44(95%CI 64. 84-186. 12) μg/dL, and the overall
zinc deficiency rate was 6. 04%. Serum
zinc concentration had statistically significant difference(P<0. 05) in different genders, regional types, regional distribution,
vitamin A status, smoking status, drinking status. In the comparison of
zinc deficiency rates, ethnic minorities(10. 67 %) was higher than Han(5. 44%), rural area(7. 35%) was higher than urban area(4. 90%),
vitamin A deficiency group(9. 12%) was higher than
vitamin A normal group(5. 90%), non-exercise group(6. 29%) was higher than sports group(5. 09%). Among different regional distributions, the western region had the highest
zinc deficiency rate(7. 33%), and among different BMI groups
overweight group had the lowest rate(4. 81%). These differences were statistically significant(P<0. 05). In the analysis of multivariate logistic regression, the risk of
zinc deficiency in the
vitamin A deficiency group was 1. 89 higher than that of the normal group(OR=1. 89, 95%CI 1. 13-3. 18); and the
overweight group had a lower risk of serum
zinc deficiency than the normal group(OR=0. 71, 95%CI 0. 52-0. 96).
CONCLUSION: