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Objective To evaluate correlations between CT features and clinical activity index of Crohn’s disease(CD).Methods The CTE datasets from 37 patients with moderate active,severe active and remission stages CD were retrospectively analyzed.To ob-serve imaging features of intestinal wall,parenteral and complications.And analyze whether there was an association between imaging findings and clinical activity.Results A total of 147 bowel segments in 37 cases were involved.Wall thickening (intestinal wall≥4 mm)were observed in 121 segments.An average thickness was (12.1±3.2)mm.There are 42 bowel segments of trilaminar mural stratifica-tion,71 of the double-layed stratification and 34 of non-stratification.Enlarged mesenteric lymph nodes were observed in 20 patients. Comb sign was observed in 27 patients.Higher density of surrounding fat appeared in 22 cases.The other 37 cases inluced 4 cases with abdominal abscess,7 cases with fistula,1 6 cases with intestinal obstruction or stenosis and 1 7 cases of perianal disease.The in-testinal stratification,wall thickening,comb sign,mesenteric fat density increased,abdominal abscess,intestinal stenosis and obstruc-tion were closely associated with clinical activity.Conclusion CTE images could provide information about intestinal wall,parenteral changes and complications of Crohn’s disease,and effectively help identifying remission and active stages of Crohn’s disease.
ABSTRACT
<p><b>OBJECTIVE</b>To evaluate the validity and reliability of Diabetes Self-management Knowledge, Attitude, and Behavior Assessment Scale (DSKAB).</p><p><b>METHODS</b>We selected 460 patients with diabetes in the community, used the scale which was after two rounds of the Delphi method and pilot study. Investigators surveyed the patients by the way of face to face. by draw lots, we selected 25 community diabetes randomly for repeating investigations after one week. The validity analyses included face validity, content validity, construct validity and discriminant validity. The reliability analyses included Cronbach's α coefficient, θ coefficient, Ω coefficient, split-half reliability and test-retest reliability.</p><p><b>RESULTS</b>This study distributed a total of 460 questionnaires, reclaimed 442, qualified 432. The score of the scale was 254.59 ± 28.90, the scores of the knowledge, attitude, behavior sub-scales were 82.44 ± 11.24, 63.53 ± 5.77 and 108.61 ± 17.55, respectively. It had excellent face validity and content validity. The correlation coefficient was from 0.71 to 0.91 among three sub-scales and the scale, P<0.001. The common factor cumulative variance contribution rate of the scale and three sub-scales was from 57.28% to 67.19%, which achieved more than 50% of the approved standard, there was 25 common factors, 91 items of the total 98 items held factor loading ≥0.40 in its relevant common factor, it had good construct validity. The scores of high group and low group in three sub-scales were: knowledge (91.12 ± 3.62) and (69.96 ± 11.20), attitude (68.75 ± 4.51) and (58.79 ± 4.87), behavior (129.38 ± 8.53) and (89.65 ± 11.34),mean scores of three sub-scales were apparently different, which compared between high score group and low score group, the t value were - 19.45, -16.24 and -30.29, respectively, P<0.001, and it had good discriminant validity. The Cronbach's α coefficient of the scale and three sub-scales was from 0.79 to 0.93, the θ coefficient was from 0.86 to 0.95, the Ω coefficient was from 0.90 to 0.98, split-half reliability was from 0.89 to 0.95.Test-retest reliability of the scale was 0.51;the three sub-scales was from 0.46 to 0.52, P<0.05.</p><p><b>CONCLUSION</b>The validity and reliability of the Diabetes Self-management Knowledge, Attitude, and Behavior Assessment Scale are excellent, which is a suitable instrument to evaluate the self-management for patients with diabetes.</p>