There was no significant differences in smoking and drinking but the malnourished group had a lower exercise rate and a higher smoking and drinking alcohol rate. 34 subjects (82.9%) answered they do not smoke while 28 subjects (68.3%) answered they do not exercise. For the subjective assessment on the food intake 15 subjects (36.6%) answered 'I eat a lot' 16 subjects (39%), 'I eat appropriate amount' and 10 subjects (24.4%) 'I eat small amount'. For the duration of meals, 20 subjects (48.8%) answered '10-20 minutes' while 15 subjects (36.6%) answered 'less than 10 minutes'. The skipping of meals rate showed that breakfast accounted for the highest percentage with 13 (76.5%) out of the 17 subjects (41.5%) who answered 'I skip meals'. For the regularity of meals, 20 subjects (48.8%) answered 'regular' while 21 subjects (51.2%) answered 'irregular,' which meant more than half of the subjects were having irregular meals. The comparison of eating behaviors and their life habit is presented in Table 3. There were more subjects in the malnourished group who had a lower bone density compared with the normal group but the difference was not significant ( Table 2). Fifteen subjects (36.6%) were classified into osteopenia based on their T-score while 2 subjects (4.9%) have osteoporosis. The bone density test showed that T-score of lumbar spine and femoral neck were lower in the malnourished group than those of the normal group but the difference was not significant. The serum calcium and 25-(OH)D 3 level were also significantly lower in the malnourished group ( P<0.05). The result of CRP was significantly higher in the malnourished group than that of the normal group ( P<0.05). The result showed the serum albumin, calcium and phosphorous levels were within normal range but the average CRP was at 0.8 mg/dL slightly higher than the normal range (0-0.5 mg/dL). The malnourished group showed a lower range than that of the normal group but the difference was not that significant. The blood test showed that the average hemoglobin was 12.6 g/dL, below the normal range (13-17 g/dL). A dose of steroids were more in the malnourished group, there was no significant difference ( Table 1). Disease activity of Cronhn's disease also assessed remission status. In comparison of disease activity, most of ulcerative colitis was remission and mild status. The average disease period was 44.2 months (approximately 3.7 years) which showed 32 subjects (78%) had the disease for more than one year while only 9 subjects (22%) had it for less than a year. There were more ulcerative colitis patients in general but the ratio between ulcerative colitis and Cronhn's disease was the same in the malnourished group. Twenty-six subjects (63.4%) had ulcerative colitis and 15 subjects (36.6%) had Cronhn's disease. The average waist circumference was 81.1 mm and average TSF was 12.2 mm. The weight loss rate was 0.4% in normal group and 3.4% in malnourished group which was significantly different ( P<0.001). The average BMI was 22 kg/m 2 and 1.9% of subject showed weight loss within the recently 6 months. Although more male subjects in the malnourished group, there was no significant difference. There were 25 male and 16 female subjects (total 41 subjects) and their mean age was 36.7 years old. The 41 subjects were classified into two groups based on nutrition status: the normal group (n=21) and the malnourished group (n=20). Although 70 patients were enrolled, data were collected only from 41 subjects who completed the study except for refused investigation, did not undergo a bone-related test, or had missing information. Other exclusion criteria included a history of colectomy, diabetes, thyroid disease, liver disease, kidney disease, sexual malfunction, fractures, and metabolic bone disease menopause medications such as vitamin D supplement, sex hormones, and phosphate binder and a controlled diet that increases bone density. Patients for whom the cause of poor bone density could have been completely unrelated to IBD were excluded. Patients who agreed to sign the experimental agreement were included in this study. A doctor evaluated compliance of patients for study when the patient visited for check ups, and they explained the purpose and procedures of the study. This study was conducted on patients with IBD who were treated at the Department of Internal Medicine, Soonchunhyang University Bucheon Hospital, between September 2010 and September 2011.
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