<sec>
<title>Objectives</title>
<p>The purpose of this study was to investigate the factors involved in the success of smoking cessation in heavy smokers enrolled in an intensive care smoking cessation camp program.</p></sec>
<sec>
<title>Methods</title>
<p>Heavy smokers enrolled in the program were classified into a success (<italic>n</italic> = 69) or failure (<italic>n</italic> = 29) group, according to whether they maintained smoking cessation for 6 months after the end of the program. Demographics, smoking behaviors, and smoking cessation-related characteristics were analyzed.</p></sec>
<sec>
<title>Results</title>
<p>Statistically significantly more participants in the success group had a spouse (98.6%; <italic>p</italic> = 0.008) compared with participants in the failure group (82.8%). However, multivariate logistic regression analysis indicated that having a spouse was not an independent factor in smoking cessation (<italic>p</italic> = 0.349). A significant difference in the frequency of counseling between the success and failure groups was observed (<italic>p</italic> = 0.001), with 72.5% of those who received counseling on 3–5 occasions for 6 months after the end of program successfully quit smoking, indicating that those who received more counseling had a higher likelihood of smoking cessation success. This was confirmed as an independent factor by multivariate logistic regression (<italic>p</italic> < 0.005). Furthermore, a graduate school level of education or higher, indicated a statistically greater success rate compared to those that were less well educated (<italic>p</italic> = 0.043). This was also observed as a significant independent factor using multivariate logistic regression (<italic>p</italic> = 0.046).</p></sec>
<sec>
<title>Conclusion</title>
<p>Education level, marital status, and the number of counseling sessions were significant factors contributing to smoking cessation success.</p></sec>
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Objectives
Vitamin D, a key regulator of bone metabolism, has been recently been linked with energy homeostasis and metabolic disorders in western countries. However, few studies have focused on the association of vitamin D with metabolic risk factors among Asian children. We studied the prevalence of vitamin D insufficiency and the association of 25-hydroxyvitamin D [25(OH)D] with metabolic risk factors in Korean schoolgirls. Methods
The sample consisted of 320 13-year-old girls recruited from two middle schools in the city of Gwacheon, Korea (latitude 37°N), in July 2011. Anthropometric and blood biochemistry data were obtained for this cross-sectional observational study. We also obtained lifestyle data from questionnaires and dietary data from 3-day food diaries. Results
Vitamin D deficiency [25(OH)D < 20 ng/mL] was noted in 63.8% of participants. The mean 25(OH)D level was not significantly lower in the overweight group. Level of physical activity and vitamin D intake did not significantly affect 25(OH)D. However, 25(OH)D levels were positively correlated with milk intake and negatively correlated with soft drink intake. Serum 25(OH)D had a negative relationship with fasting glucose and insulin resistance index (homeostasis model assessment-insulin resistance; HOMA-IR) after adjustment for physical activity and body mass index z score (<i>r</i> = −0.144, <i>p</i> = 0.015), and with metabolic risk score similarly (<i>r</i> = −0.141, <i>p</i> = 0.012). Levels of insulin, HOMA-IR, and systolic blood pressure were higher in girls with deficient 25(OH)D levels than in those with sufficient levels. Conclusion
We found that low 25(OH)D levels were associated with higher blood glucose and insulin resistance. Korean girls with low 25(OH)D levels could be at increased risk for metabolic disorders.
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