Study design
This methodological study aimed to investigate the reliability and validity of the Persian version of the miss care tool.
Tool
The standard miss care tool consists of three sections with 41 items. The first section contains demographic and underlying information, including work conditions and satisfaction level. Part A (24 items) involves a series of nursing activities for assessment of miss care elements. In addition, part B (17 items) investigates the reasons for miss care in three dimensions, namely relations/teamwork (nine items), financial resources (three items), and human resources (five items).
In this study, the participants were requested to choose the answer with the best level of agreement with the item. For the first part, the respondents were asked to mark always, rarely, sometimes, often, or never for the miss care by all personnel in their wards. For the second part, they were required to choose very important reason, moderate reason, weak reason, or no reason. Higher scores represented higher levels of miss nursing care in part A and a stronger reason for its occurrence in part B.
Procedure
Translation
In order to translate the miss care tool, the guidelines proposed by the World Health Organization (WHO) were used. Considering the defined standard in tool localization, at first, permission was gained from Dr. Kalisch, the designer of the tool in the University of Michigan. Then, the tool was translated to Persian by two proficient translators separately. The two translations were discussed in a specialized panel and the two translators’ opinions were matched. The approved Persian version was then given to a specialist in Persian Literature who was required to edit it with respect to grammar and wording. Afterwards, the Persian version was back-translated into English by a proficient translator. Finally, the translated version was sent to the designer and the items were reviewed and confirmed accordingly.
Content and face validity
Cognitive interview
The face validity was assessed via face-to-face interviews with 10 nurses with various clinical experiences and job tenures. These nurses were requested to evaluate the items with regard to ambiguity, difficulty, and appropriateness and suggest terms for substitution, if necessary.
Content validity
Content Validity Index (CVI) was explored using Waltz and Bussel’s index. In order to determine CVI, ‘cultural relevancy was used for all items based on a four-point Likert scale. In doing so, 15 nursing specialists were asked electronically or in person to determine the relationships between the tool items with regard to the subscales using a four-point Likert scale (1: not related, 2: somehow related, 3: related but needs revision, and 4: completely related). Then, CVI was calculated for the items that received the highest scores (rating of 3 or 4) using the following formula. It should be noted that the value of 0.79 was considered as acceptable (18). The scale-CVI was computed, as well.
Construct validity
The present study participants included the nurses with at least six months of work experience who cared for adult patients in different wards. The participants were selected through convenience sampling. In order to determine the construct validity of the tool and discover the hidden factors, use was made of Exploratory Factor Analysis (EFA), which is the most common method for classification of items. Tebachnick and Fidel stated that a sample size of at least 300 participants was required for factor analysis (19). In the present study also, 300 tool s were completed by nurses in 10 healthcare centers.
Reliability
The reliability of the tool was assessed by internal consistency and test-retest methods. Internal consistency was determined using Cronbach’s alpha coefficient and temporal consistency using the test-retest method. For this purpose, the tool was completed by 30 nurses with a two-week interval.
Job satisfaction
The first part of the tool contained three items related to job satisfaction: satisfaction with the job, satisfaction with teamwork in the ward, and satisfaction with the job position. The respondents were asked to evaluate the items using a five-point Likert scale (5: very dissatisfied, 4: dissatisfied, 3: not satisfied and not dissatisfied, 2: satisfied, and 1: very satisfied).
Ethical considerations
The necessary permissions were obtained from the designer of the tool and the authorities of the healthcare centers. Moreover, the nature and objectives of the research were completely explained to the participants. They were also informed about the voluntary nature of the study. Confidentiality of the data was also taken into consideration and the results were published anonymously. All methods were performed in accordance with the relevant guidelines and regulations.
Data analysis
All data analyses were carried out using the SPSS statistical software, version 25. Descriptive statistics included mean, Standard Deviation (SD), and absolute and relative frequencies. In order to determine the psychometric properties of the tool, factor analysis, Kaiser-Meyer-Olkin (KMO) test, and Bartlett’s test of sampling adequacy were used (Table1). At first, EFA using maximum likelihood was used to analyze the related items. It should be noted that the normal distribution of data was the prerequisite for this method. In addition, skewness and kurtosis of the variables was within the range of +3. Then, maximum likelihood with PROMAX rotation was used to promote the initial factor structure. The minimum cut point for the factor load was considered >0.3.
Table 1
Finalresults of KMO and Bartlett’s test of sphericity to determine the validity of the tool
Bartlett test
|
KMO
|
Chi-Square
|
df
|
p-value
|
.906
|
2160.809
|
136
|
P= .000
|