Kharameh Zahra Taheri, Foroozanfar Sahar, Zamanian Hadi
School of Paramedical Sciences, Qom University of Medical Sciences, Qom, Iran E-mail :
Asian Pac J Cancer Prev. 2014;15(11):4595-9. doi: 10.7314/apjcp.2014.15.11.4595.
Colorectal cancer is a serious health problem. Early detection of colorectal cancer is crucial for treatment and reducing mortality. Beliefs related to colorectal cancer have been found to be a factor in a person's decision about colorectal cancer screening programs. To determine such beliefs, a valid and reliable instrument is necessary.
The aim of this study was to adapt and determine the psychometric properties of the Persian version of Champion's Health Belief Model Scale of breast cancer screening in the measurement of beliefs toward colorectal cancer (CRC) screening.
The 'forward-backward' procedure was applied to translate the instrument from English into Persian. This study was conducted in Iran from June 2012 to May 2013. A convenience sample of 200 individuals aged 50 years and older was recruited from the population at the outpatient clinics in the three teaching hospitals. Validity was assessed using content, face and construct validity. To test reliability, the internal consistency was assessed by using Cronbach's alpha coefficient and test-retest (intraclass correlation coefficient) analyses. Exploratory factor analysis was used to assess the construct validity and determine the factors of adapted Champion's Health Belief Model Scale.
The mean age of the participants were 62.5 years (SD=10.8 years) and the majority of them (75.5 percent) were female. The results of exploratory factor analysis indicated a six-factor solution for the questionnaire (benefits, motivation and confidence, seriousness, susceptibility, emotional barriers and background barriers) that jointly accounted for 55.52% of variance observed. Cronbach's alpha of the subscales ranged from 0.57 to 0.89 and test-retest reliability ranged from 0.81 to 0.93 indicating a good range of reliability.
The findings of this study suggest that the Persian version of Champion's Health Belief Model Scale of CRC screening has good psychometric properties and could be an appropriate measure for health beliefs related to CRC screening in national and international studies.
结直肠癌是一个严重的健康问题。结直肠癌的早期检测对于治疗和降低死亡率至关重要。已发现与结直肠癌相关的信念是影响个人对结直肠癌筛查项目决策的一个因素。为了确定这些信念，需要一个有效且可靠的工具。
本研究的目的是改编并确定乳腺癌筛查的波斯语版冠军健康信念模型量表在测量对结直肠癌（CRC）筛查的信念时的心理测量特性。
采用“前后”程序将该工具从英语翻译成波斯语。本研究于2012年6月至2013年5月在伊朗进行。从三家教学医院门诊的人群中招募了200名年龄在50岁及以上的便利样本。使用内容效度、表面效度和结构效度评估效度。为了测试信度，使用克朗巴赫α系数和重测（组内相关系数）分析评估内部一致性。探索性因素分析用于评估结构效度并确定改编后的冠军健康信念模型量表的因素。
参与者的平均年龄为62.5岁（标准差 = 10.8岁），其中大多数（75.5%）为女性。探索性因素分析结果表明问卷有一个六因素解决方案（益处、动机和信心、严重性、易感性、情感障碍和背景障碍），共同解释了观察到的55.52%的方差。各子量表的克朗巴赫α系数范围为0.57至0.89，重测信度范围为0.81至0.93，表明信度范围良好。
本研究结果表明，CRC筛查的波斯语版冠军健康信念模型量表具有良好的心理测量特性，可作为国内外研究中与CRC筛查相关健康信念的合适测量工具。
