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To develop and validate a questionnaire based on the Transtheoretical Model (TTM) for assessing the stages of behavior change in patients with Chronic Obstructive Pulmonary Disease (COPD) (COPD-TTM questionnaire), which can be used to evaluate patients’ behavioral stages and provide a basis for personalized interventions.
A preliminary COPD-TTM questionnaire was constructed through literature review and expert consultation, consisting of five primary dimensions and 15 secondary items. The structural validity was verified by measuring 171 COPD patients, while content validity was assessed through expert ratings. A retest was conducted two weeks later to validate the test-retest reliability.
Five factors were extracted from the 15 items, cumulatively explaining 68.5% of the total variance, with item loadings for each factor not less than 0.65, indicating alignment of the questionnaire items with the expected TTM stages. The CFA results showed a χ2/v value of 1.85, CFI of 0.98, RMSEA of 0.045, and SRMR of 0.05,demonstrating good structural validity of the questionnaire. The S-CVI was 0.93, with all I-CVI values above 0.80, indicating strong content validity. The Cronbach’s α coefficient for the COPD-TTM questionnaire was 0.980, and the test-retest reliability ICC was 0.961(95%CI: 0.935-0.977), suggesting good reliability and validity.
The COPD-TTM questionnaire can be used to assess the stages of behavior change in patients, providing a basis for further development of individualized intervention plans. Future research should focus on a broader range of factors influencing behavior change to optimize personalized interventions.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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