Validity and reliability of the scale to measure attitude toward HPV prevention among married women aged 15-49

 Ha Dinh Thu1, Le Nguyen Hai1, Van Tran Thi2, Huong Nguyen Thanh1

1 Hanoi School of Public Health, Hanoi, Vietnam

2 Vietnam Academy of Traditional Medicine, Hanoi, Vietnam

 

 

ABSTRACT

Human Papillomavirus (HPV) is responsible for 90.0% of all cervical cancer cases worldwide. Positive attitude could bean important determinantof HPV prevention, particularly HPV vaccine and cervical cancer screening uptake. Nevertheless, it is hard to measure andwas mentioned only in very few studies. Hence, this study was initially conducted to develop a plausible scale to measure attitude toward HPV prevention among women aged 15-49.

Objectives

In order to assess the validity and reliability of the scale to measure attitude toward HPV prevention among married women aged 15-49 in 2 districts: Chi Linh (a semi-rural district in Hai Duong province) and Thanh Thuy (a rural district in PhuTho province), Vietnam.

Methods

The data on attitude toward HPV prevention was extracted from a study in 2014 among 651 women, taken systematically from the list of married women aged 15-49 in 2 investigated districts. The scale was initially composed from a total of 9 items. Content validity was tested by interviews of 3 experts and 1 group discussion of 8 women aged 15-49 in each district. Structural validity was evaluated through exploratory factor analysis (EFA). Reliability assessment (internal consistency)was performedusing Cronbach’s Alpha coefficient. SPSS 18.00 sofware was employed for data analysis.

Results

Two over 9 items were not qualified enough and were removed from the questionnaire consequently. The remaining 7 items were distributed clearly into 2 main factors with relatively good correlation (0.59-0.85) and acceptable Cronbach’s alpha (0.75 for each factor and 0.61 for the tool generally). 60% of variability in attitudes was explained by the scale.

Conclusion

This study demonstrated that the7 items scale has satisfactory validity and reliability, thus, can be used to measure attitude toward HPV preventionamong married women between 15-49 years old in Vietnam.

Key words

Validity, reliability, HPV, attitude, women aged 15-49

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