[Usage status of salt control spoon and influencing factors among students' caregivers of four cities in China in 2014].

OBJECTIVE: To analysis the usage status of salt control spoon and explore its influencing factors among student caregivers of four cities. METHODS: The data of 2014 salt knowledge, attitude, practice(KAP) survey among urban residents in China was used, which a total of 12 848 student caregivers(male 4862, female 7986) were recruited from Guangzhou, Wuhan, Chengdu and Shenyang by stratified random cluster sampling method. A self-filling questionnaire survey was used to collect information about knowledge of salt and usage of salt control spoon. Logistic regression model was used to explore influencing factors of salt control spoon usage effected by gender, education level, family income, salt related knowledge, etc. . RESULTS: The proportion of student caregivers who didn't know salt control spoon was 33. 3%, and 41. 9% of them knew salt control spoon but hadn't it. Only 24. 8% of them have heard of salt control spoon and had it at home. The proportion of having not heard salt control spoon among Wuhan, male, junior high school and below, other occupation and low family income group was higher than other groups. The proportion of having salt control spoon of groups in Guangzhou, female, high school and above, professional technical and clerical personnel, high family income was higher than other groups, and the difference was statistically significant(P<0. 01). Among the student caregivers having salt control spoon, the proportion of did not used salt control spoon, used it occasionally or used it without controlling the quantity and used it often and controlled the quantity was 10. 0%, 60. 6% and 29. 5%, respectively. The student caregivers of Shenyang, male, high family income groups used salt control spoon and controlled the quantity more often than the other groups, and the difference was statistically significant(P<0. 05). As shown in multivariate logistic regression analysis, the OR(95%CI) of high school and above, high income level, knowing the recommended intake of salt, knowing that high salt diet can cause high blood pressure on the influence of having salt control spoon was 1. 328(1. 221-1. 445), 1. 268(1. 029-1. 563), 1. 243(1. 145-1. 348)and 0. 838(0. 763-0. 921), respectively. Among the student caregivers who having salt control spoon, the OR(95%CI) of knowing the recommended intake of salt, knowing that high salt diet can cause high blood pressure, and source of salt control spoon(community/unit, friends/relatives) on the influence of using salt control spoon was 1. 473(1. 259-1. 722), 1. 249(1. 040-1. 501)and 0. 505(0. 415-0. 615)/0. 603(0. 441-0. 823), respectively. CONCLUSION: There still existed lower proportion of awareness and usage of salt control spoon.