Study design, period and study area
An Institutional based cross-sectional study design was conducted in the diabetics unit of chronic illness in UOG referral hospital.The study was conducted in the diabetics unit of chronic illness in UOG referral hospital located 742km north from Addis Ababa Ethiopia. It is a regional referral hospital with more than 550 beds and has an outpatient department which serves about 250 patients’s every day. The study is conducted from November, 2016 to June, 2017. The source population was all DM patients unit of chronic illness clinic in UOG referral hospital and the study population was male DM patients unit of chronic illness clinic in UOG referral hospital during the period of data collection from November to December 2016. And the total population of Gondar is 333103 and have total of 21 kebeles.
Sample size and sampling procedures
The sample size was determined or calculated according to the assumption of single population proportion using the following assumption from the previous study done in Kenya at Kenyatta national hospital, Kenya’s main referral and teaching hospital for university of Nairobi 68% of the people with diabetic men ED using IIEF-5 tool(25).
Z= 95% confidence interval = 1.96
P=68% single population proportion
d=marginal error 5% n = Z2 P (1-P) = 1.962X 0.68 (0.32) = 334
Then the final sample size with 10% non response will be 334+10% non response=367.
Simple random sampling technique was used to collect the data. Every 3rd patient who was coming to the chronic illness clinic are interviewed. Subjects or participants are taken in order to avoid reputation in case of some patients may come for visit more than one times within the period of data collection.
Data collection procedure
The structured questionnaire was adopted using (IIEF-5) is a well validated questionnaire which is used for the evaluation of sexual dysfunction and it is used to assess ED in diabetic men.
Four male nurses have training for data collection by the investigator, the whole interview part is collected by the trained nurses a structured questionnaire was proposed for interview to collect the socio-demographic information from DM patients following at UOG referral hospital chronic illness clinic, and clinical characteristics was collected from the patient history or record.
Data quality control
Data collectors were take training for two days. To ensure the consistency of the interview and examination and the acquisition of quality data, random check was carried out for its completeness, accuracy and clarity on a regular base by the principal investigator during the data collection period. The questionnaire have pre-test at one of private clinic for its applicability, simplicity, understandability by the trained data collectors with a very close supervision of the principal investigator.
Data processing and analysis
Data was going to coded and entered using EPI INFO version 7 and exported to SPSS for windows version 20. Missing values and data clearance was checked. The magnitude and severity in relation to socio-demographic data was analyzed using descriptive analysis. Frequency tables, graphs, percentages were used. Bivariate analysis was conducted primarily to check which variables have association with the dependent variable individually. Variables found to have association with the dependent variable are then entered in to multivariate logistic regression for controlling the possible effect of confounders and finally the variable which has significant association are identified on the basis of odds ratio(OR), with 95% CI and P-value<0.05.
Ethical approval and consent to participation
Ethical clearance was obtained from the UOG review board. The study purpose and importance is explained to all participants and written consent obtained prior to responding to the interview. They are told that they can refuse to participate. Confidentiality highly maintained at all levels of the study.