Study design
This correlation study was conducted from October 2019 to January 2020.
Sample and Sampling
The study sample consisted of nursing, medical, and health students who were studying at Kermanshah University of Medical Sciences in 2019-2020 academic years. Sample size was determined based on a correlation coefficient formula (n= 210). The participants were selected by stratified random sampling method. The response rate to the questionnaires was 100%. The inclusion criteria in this study were studying at the second semester of 2019–2020 academic years, consent to participate in the study, studying in one of the fields of nursing, medicine or health and completing the questionnaires fully.
Instruments
Data were collected using a self-designed scale and the self-efficacy in research measure (SERM) (32). A self-designed scale was used to obtain demographic information, including sex, age, and field of study. This scale included other questions about grade point average, hours of using of the internet, hours of using the library, reason or purpose of using the internet, and frequency of use of the scientific database.
The Persian version SERM was used to evaluate RSE. The SERM consists of 33 items and developed by Phillips and Russell (1994). The psychometric properties of this questionnaire have been confirmed in Iranian students (33). In addition, the validity and reliability of this questionnaire in Phillips and Russell (1994) study were confirmed (32). Internal consistency of the scale in this study was 0.960 (Cronbach’s a=0.960).
SERM consists of four sub-scales practical research skills (eight items), Research design skills (eight items), writing skills (nine items) and quantitative and computer skills (eight items). The method of scoring SERM is that each item is given a score from 0 to 9. A score of 0 indicates no confidence in research ability, and a score of 9 reflects complete confidence in research ability. The total score of the questionnaire was from 0 to 297. We also used indicator GPA to determine students' academic performance. Many studies have used the GPA to assess academic performance (1, 34, 35).
Study Procedures
Initially, the design and implementation permission was obtained from the KUMS’s Research Deputy. Then, the researcher attended the schools of KUMS and obtained the list of students. The list was numbered and then students were selected according to the table of random numbers. After selecting the samples, the researcher referred to the students according to the classroom schedule. The purpose of the study was stated to the students. Then, the questionnaire was given to the students who were willing to participate in the study. Finally, questionnaires were collected after completion.
Ethical considerations
The current study has been confirmed by the ethics committee of KUMS with the code of IR.KUMS.REC.1398.212. In order to comply with ethical considerations, written informed consent was obtained from samples. The students were assured about the confidentiality of their demographic and answers.
Data analysis
The statistical package for the social sciences (SPSS for Windows 18.0, SPSS Inc., Chicago, IL) was used to conduct the data analyses. Frequency, percentage, mean and standard deviation were used for descriptive analysis. Independent sample t-test, one way ANOVA and Pearson’s correlation (r) were used for analysis of questions. To compare the mean RSE score in male and female students, the independent sample t-test was used and the one-way ANOVA test was used to compare the mean RSE score according to variables of age and field of study. Pearson’s Correlation (r) test was used to investigate the correlation between RSE and academic performance. Significance level was set at less than 0.05 (P≤0.05).