Evaluation of the
quality of informed consent in patients referring to infertility centers of
Rasht in 2019
Seyedeh Behnaz Masoumzadeh Kiaee
1, Ardalan Majidinia 2,
Shahab Dastmardi 3, Kourosh
Delpasand 4*
1 Social Determinants of Heath
Research Center, Guilan University of Medical
Sciences, Rasht, Iran
2 Student Research Committee, School
of Medicine, Guilan University of Medical Sciences,
Rasht, Iran
3 Student Research Committee, School
of Pharmacy, Guilan University of Medical Sciences,
Rasht, Iran
4 Department of Medical Ethics, School
of Medicine, Guilan University of Medical Sciences,
Rasht, Iran
*Corresponding
Author: Kourosh Delpasand
* Email: kd388@yahoo.com
Abstract
Introduction: Infertility
refers to couples' inability to get pregnant after at least one year of
intercourse without the use of contraceptives. Getting an informed consent as
one of the principles of patients’ rights, is a process that she decides on
therapeutic intervention after receiving adequate information from the
therapist team. The lack of understanding and compliance with this process
today has involved many physicians and other medical staff and hospital
practitioners in the legal and regulatory authorities.
Purpose: The aim of
this study was to explain the quality of the informed consent process of
patients Referred to infertility treatment centers in Rasht 1398.
Materials
and Methods: This study is a cross- sectional and analytical study on 172
patients referred to Alzahra infertility center in
Rasht in the first half of year 1398. Patients
information were collected from a questionnaire. Then data were analyzed by
SPSS. Mean and standard deviation indices with 95% confidence interval were
used to describe the data and Shapiro- Wilk test and Spearman’s rank
correlation coefficient were used for data analysis.
Result: The mean score
of "providing information to the patient" with a mean of 7.23 in
intermediate condition, the mean score of "understandable consent
form" with 3.51 out of 4 in excellent condition and the mean score of
"communicating with the physician" with an average of 9.81 were good
but the "voluntary consent form" with a score of 0.6 out of 8 showed
this dimension to be weak. Overall, the quality of consent of patients referred
to infertility centers in Rasht with average score of 21.16 was estimated. Only
weak significant relationship was found between the level of educators'
satisfaction with the quality of informed consent.
Conclusion: The quality of
providing information and how to get a written consent was intermediate.
Therefore, it is necessary to elaborate on other available therapies and their
benefits and potential complications.
Keywords: Infertility, Informed
consent, Quality, Get pregnant
Introduction
Infertility
refers to a couple's inability to get pregnant after at least one year of
intercourse without the use of contraceptives (1). According to the World
Health Organization (WHO), 10 to 15 percent of couples in the world (more than
80 million) suffer from infertility (2) and in Iran, about a quarter of Iranian
couples experience primary infertility during their life of marriage (3).
Patients,
as one of the socially vulnerable groups, are supported by a set of laws aimed
at observing the physical, mental, spiritual, and social needs of the patient,
which are called patients' rights (4, 5), And one of the issues in the new
rights of patients is the issue of informed consent in medical practices (6).
Informed
consent is the process by which a patient or legal representative understands
and agrees to a treatment plan (7). Self-informed consent includes the three
basic components of information sharing, decision-making ability, and the
ability to make free and voluntary choices (8).
Among
the undeniable reasons for the need for informed consent as part of the
patient's rights, there is a significant relationship between obtaining the
desired informed consent (consent with sufficient awareness) and obtaining the
appropriate clinical outcome including improving mental health, relieving
symptoms and pain, improvement in patient’s function, and physiological
criteria (9). The main purpose of obtaining consent is not to reduce the
physician's responsibility but to help the patient make the best decision (10).
The
lack of understanding and observance of this process today has involved a large
number of physicians and other medical and hospital staff and has caused a lot
of material and moral damage (11, 12).
Among
the studies conducted in this field are the study of Barzegar
and his colleagues, which examined the level of awareness of consent obtained
from patients undergoing gynecological surgery at Hazrat
Zeinab Hospital in Shiraz in 2016. According to the information obtained, 43.5%
of patients had an inadequate understanding of the information provided to
them. The number of information patients had about their rights in the hospital
and the amount of reading the consent form was in the most inappropriate
situation. The findings of this study indicate the inadequate status and low
awareness of consent obtained from patients undergoing gynecological surgery in
Hazrat Zeinab Hospital (13).
Also,
in another study, Meysami and his colleagues
conducted a descriptive-analytical study on 120 people to explain the quality
of the informed consent process of patients admitted to the surgical wards of a
military hospital in Tehran and provide solutions to improve it in 2016. In
this study, a questionnaire in the form of 19 questions was used. In evaluating
the quality of informed consent of patients admitted to surgical wards, the
average score of "providing information" with 18.93, "observing
patients' decision-making competence" with 7.48, and "how to obtain
written consent" with 5.47, is lower than the expected mean and mean
scores of "Patient Perception" with 9.77, "Patient
volunteering" with 8.16 and "Physician-Patient Interaction" with
16.02 were acceptable. In this study, the quality of the presenting information
and the way of obtaining written consent was lower than expected and the mean
score of patients' understanding, being volunteer, and interaction between
physician and patient was acceptable (14).
So
far, no study has focused on the quality of consent obtained from patients
referred to infertility centers. This study examines the quality of informed
consent of patients referred to infertility centers in Rasht.
Materials and Methods
The
present study is a cross-sectional analytical study that was performed on
patients referred to Al-Zahra Infertility Center in the first 6 months of 1398.
The sampling method was simple random and the information of this study was
collected using a questionnaire attached at the end of this thesis, as a
self-report. This questionnaire has been used in Sheikh Taheri's study on
hospitalization procedures under surgery (33). The validity of the
questionnaire was assessed using the content application method and with the
opinion of 10 professors and experts of the university, whose CVI value was 0.9
and its CVR was 0.8. The reliability of the questionnaire in the present study
using the Cronbach's alpha method after completion by 35 people who refer to
infertility centers in Rasht is 0.87.
This
questionnaire has two parts. The first part includes demographic information of
patients such as age, waiting time for fertility, education, religion, and
their number of marriages, and the second part (main) includes 22 questions in
4 areas of providing information to the patient, comprehensibility of the
consent form, voluntary and doctor's interaction with the patient. The
questions' scores are based on the answers yes (2 points), to some extent (1
point), and no (zero score). "No answer" or "I do not
remember" answers are not rated. The total score of the questionnaire is
44-0. Thus, the score range of the questions was related to provided
information (0-18), comprehensibility of the consent form (0-4),
physician-patient interaction (0-14), and voluntariness (0-8). Scores below 25%
are considered poor, between 50-25%
are average, between 75-50% are good, and more than that are excellent. To
collect data, after attending infertility treatment centers, we introduced
ourselves to the recipients of infertility services and stated the purpose of
this study and the method of work, and after obtaining their consent and
assuring them about the preservation of the information, the questionnaires
were completed by interview and we explained each question to the patient when
needed.
The
sample size with 95% confidence interval and the values (d = 0.15 p) and pi =
50% related to the consent form and using the following formula, 172 were
estimated.
Results
In this study, 172 infertile women
who were referred to the infertility center of Al-Zahra Hospital in the first 6
months of 1398 were studied. The minimum age of participants in this study was
20 years and the maximum was 46 years with a mean and standard deviation of 32
± 5/48 years. The mean waiting time for fertility was 3/85 ± 5/6 years. Most
participants (43%) had a diploma. All participants in this study (100%) were
Shia. Among them, 167 people (97.1%) had their first marriage and only 5 people
(2.9%) had their second marriage.
In terms of providing information to
the patient, according to Table 1, most people (43.9%) stated that not enough
information was available to them. Although most patients were satisfied with
the information they received about the cause of infertility (61%), the method
of infertility treatment (58.1%), and the cost of their treatment (68%), they
mainly believed in the legal and jurisprudential aspects (68%), benefits
(45.9%), side effects of treatment (50.6%), the reason for choosing treatment
(43.6%) as well as other treatment options (77.3%) did not receive an
explanation. In total, the average score of providing information was 18 points
(3/194 ± 7/23), which showed that the status of providing information to
patients was moderate.
Table 1. Consenters' opinions about providing information in the process of
obtaining consent in patients referred to infertility centers in Rasht in 1398.
Total |
No Answer |
I Don’t Remember |
No |
To some extent |
Yes |
Questions |
172 |
- |
- |
23(13.4) |
44(25.6) |
105(61) |
Explain
the cause of infertility |
172 |
- |
- |
23(13.4) |
49(28.5) |
100(58.1) |
Explain the
method of infertility treatment |
172 |
8(4.7) |
42(24.4) |
117(68) |
3(1.7) |
2(1.2) |
Explain
the legal aspects of treatment |
172 |
8(4.7) |
42(24.4) |
117(68) |
3(1.7) |
2(1.2) |
Explain the
jurisprudential aspects of the treatment method |
172 |
- |
2(1.2) |
79(45.9) |
50(29.1) |
41(23.8) |
The
benefits of the treatment method |
172 |
- |
3(1.7) |
87(50.6) |
52(30.2) |
30(17.4) |
Side Effect
of treatment |
172 |
- |
1(0.6) |
75(43.6) |
31(18) |
65(37.8) |
The
reason for choosing this method of treatment |
172 |
- |
1(0.6) |
133(77.3) |
18(10.5) |
20(11.6) |
Explaining
other treatment options |
172 |
- |
2(1.2) |
26(15.1) |
24(14) |
120(69.8) |
The
cost of this treatment |
1548 |
16(1) |
93(6) |
680(43.9) |
274(17.7) |
485(31.3) |
Total |
* The numbers in parentheses indicate the percentage.
According to Table 2, most of the
consenters for infertility treatment (84.3%) mentioned that the consent form
was understandable for them. In general, the average score in terms of
comprehensibility of the consent form was (1/172 ± 3/51 out of 4 points), which
indicates the excellent comprehensibility of the consent form.
Table 2. Consenters' opinions about the
comprehensibility of the infertility treatment consent form in infertility
treatment centers in Rasht in 1398.
Questions |
Yes |
To some extent |
No |
I Don’t Remember |
No Answer |
Total |
Adequacy
of explaining the contents of the consent form |
144(83.7) |
12(7) |
4(2.3) |
9(5.2) |
3(1.7) |
172 |
Understanding
the information of the consent form |
146(84.9) |
12(7) |
2(1.2) |
9(5.2) |
3(1.7) |
172 |
Total |
290(84.3) |
24(7) |
6(1.7) |
18(5.2) |
6(1.7) |
344 |
In
terms of voluntary consent, only 4.2% of the participants in the study
considered the choice of treatment to be voluntary. Most of the consenters
stated that the benefits (89.5%) and side effects of other
available
treatments (87.8%) were not explained to them. In total, a score of 1/383 ± 0/6
out of 8 points, showed that the status of obtaining consent is poor in terms
of volunteering (Table 3).
Table 3. consenters'
opinions about the voluntary process of obtaining consent in patients referred
to infertility centers in Rasht in 1398.
Questions |
Yes |
To some extent |
No |
I Don’t Remember |
No Answer |
Total |
Awareness of the possibility of withdrawal from treatment |
2(1.2) |
6(3.5) |
142(82.6) |
19(11) |
3(1.7) |
172 |
Possibility
to choose other methods |
16(9.3) |
14(8.1) |
139(80.8) |
3(1.7) |
- |
172 |
Explaining
the benefits of other treatments |
5(2.9) |
12(7) |
154(89.5) |
1(0.6) |
- |
172 |
Explaining
the side effects of other treatments |
6(3.5) |
14(8.1) |
151(87.8) |
1(0.6) |
- |
172 |
Possibility
to choose other methods |
29(4.2) |
46(6.7) |
586(85.2) |
24(3.5) |
3(0.4) |
688 |
As
Table 4 above shows, the majority of consenters (56.2%) reported having a good
physician relationship with them. Most patients reported trust in the physician
(88.4%), comprehensibility (72.7%), and simplicity of physician explanations
(73.8%), but 55.2% of people stated that they could not contact the doctor. In
total, a score of 3/411 ± 9/81 out of 14 points indicates that the physician's
relationship with patients was good.
The
total quality score of informed consent of patients referred to infertility
treatment centers is 6/457 ± 21/16 out of 44 points, which indicates its
average quality.
There
was no statistically significant relationship between the quality of informed
consent and age and waiting time for fertility (P <0.05). However, a weak
positive correlation was found between the quality of informed consent and
education (P <0.05). Given that all participants in this study were Shia, no
correlation can be found between the quality score of patients' informed
consent to infertility treatment centers and religion. Due to the imbalance
between the groups of first marriage (167 people (97.1%)) and second marriage
(5 people (2.9%)), there can't be found any relationship between this variable
and the quality of informed consent of patients referred to the infertility
centers.
Table 4. consenters' opinions about the
relationship between physician and patient in the process of obtaining consent
in patients referred to infertility centers in Rasht in 1398.
Questions |
Yes |
To some extent |
No |
I Don’t Remember |
No Answer |
Total |
Trust in the doctor |
152(88.4) |
19(11) |
1(0.6) |
- |
- |
172 |
Enough time to think and ask questions |
74(43) |
70(40.7) |
28(16.3) |
- |
- |
172 |
Possibility to contact the doctor |
39(22.7) |
38(22.1) |
95(55.2) |
- |
- |
172 |
Get complete answers to questions |
81(47.1) |
65(37.8) |
26(15.1) |
- |
- |
172 |
enough time for presenting the information |
79(45.9) |
63(36.6) |
30(17.4) |
- |
- |
172 |
Understandable physician description |
125(72.7) |
40(23.3) |
6(3.5) |
- |
1(0.6) |
172 |
Simplicity of the doctor's description |
127(73.8) |
39(22.7) |
5(2.9) |
- |
1(0.6) |
172 |
Total |
677(56.2) |
334(27.7) |
191(15.9) |
0 |
2(0.2) |
1204 |
Discussion
The present study is a cross-sectional study that was performed on
172 infertile patients referred to Al-Zahra Infertility Treatment Center in the
first 6 months of 1398. The samples were selected by simple random sampling and
information was collected through a questionnaire through interviews. The
results of the study showed that the dimension of "providing
information" in the average state, the dimension of "ability to understand
the consent form" in the excellent state, the dimension of "voluntary
consent form" in the weak state, and the dimension of "doctor-patient
relationship" in the good state. Among the 22 questions of this
questionnaire, the best situation in terms of the quality of obtaining consent
was related to the patient's trust and confidence in the doctor, and the lowest
status was related to the patients' awareness of other treatment methods and
their advantages and disadvantages.
In this study, 43.9% of people believed that the information
provided was insufficient. In fact, most patients were satisfied with the
explanations provided about the cause of infertility, infertility treatment
method, and also the cost of their treatment, but they mentioned the lack of
sufficient explanation about the jurisprudential and legal aspects, benefits
and complications of treatment, the reason for choosing treatment, and they
have not received other treatment options, which is consistent with the
findings of Meysami (14) and Badsar
(10). In contrast to the present study, Howlader's
study showed that most patients are aware of the complications of surgery and
even the possibility of death (15). However, in another study in Italy, 44.6%
of patients had insufficient information (16).
As mentioned, one of the weakest topics studied in this study is to
provide information about the advantages and disadvantages of treatment
methods, which has the same result as the study of Butrle
(17), Ne'matolahi (18), Ajorpaz
(11), and Sheikh Taheri (19).
The present study showed that most of the consenters for receiving
infertility treatment (84.3%) considered the consent form to be understandable,
which is contrary to the results of Sheikh Taheri's research (19), but
consistent with Joff's study in the United States
that 86% of patients considered the consent form to be comprehensible (20).
Findings of this study showed that most of them do not consider
their choice of treatment voluntary (85.2%). In other words, like the findings
of Sheikh Taheri's study (19), and Muzur, patients do
not receive sufficient information about available treatments and have no
involvement in treatment decisions. However, 80% of patients are willing to
participate in decision-making for their treatment (21).
The voluntary dimension in the present study was
examined to obtain
information about other treatment options. Volunteering can be undermined by
inadequate understanding, incompetence to make decisions or lack of sufficient
and impartial information, patient respect for the physician, and pain or
anxiety. Avoidance of coercion, temptation, and deception are also among the
pillars of voluntariness (22-26) which have not been studied in this study.
Also, this study was performed only on people who were referred to the centers
due to infertility, and as a result, the negative response of patients in the
voluntary section may be due to the lack of alternative treatment for them in
some cases.
56.2% of people referred to infertility centers were satisfied with
the doctor's relationship with them. In the study of Ajorpaz
et al., 64.5% of patients were satisfied with the relationship with the
physician (11), which is consistent with this study. In this study, most
patients found the physician's explanations understandable and the time to
present information was sufficient, which was observed in the study of Yaghmaei et al. in 67.3% of patients. (27).
Also, 43% of the people considered the time given to think and ask
questions to the doctor sufficient. Mckeague's study
also demonstrated the importance of making it possible for patients to ask
questions (28). As mentioned earlier; Among the 22 questions of the
questionnaire used in this study, the best situation in terms of the quality of
obtaining consent was related to the patient's trust and confidence in the
physician (88.4%), which is consistent with the study of Ne'matolahi
(18). However, most of the participants in this study (55.2%) reported the
impossibility of contacting a doctor, which was unlike Sheikh Taheri's study
(19).
One of the limitations of this study was the lack of cooperation of
private centers in accessing patients and their information. Therefore, this
study was performed only on those who referred to Al-Zahra Infertility Center,
while by examining the quality of the satisfaction of those who referred to a
private center, it would be possible to examine the difference in the quality
of satisfaction obtained in these two centers.
Another limitation of this study that makes it difficult for
patients to provide information and understanding is the passage of time. the
time between our contact with patients and the time of their referral to the
infertility center to receive services is a few months, and this issue raises
the possibility of forgetting the information given to the patient.
In this study, age, waiting time for fertility, religion, and
multiple marriages were not associated with the quality of informed consent in
this study, but a weak positive correlation was found between education level
and the quality of informed consent, which is consistent with Minis studies
(29), Faghanipour (30), Barzegar
(13) and also Badsar (10).
Conclusion
In this study, the dimensions of "comprehensibility of consent
form", "physician-patient relationship" and "providing information
to the patient" are in the best condition, respectively, and
"voluntary consent form" is the weakest dimension in the process of
obtaining informed consent. So that the patient's knowledge of "benefits
and side effects of other available treatments" as the biggest weakness
and "patient trust in the doctor", as a strong point in the process
of obtaining informed consent was obtained. Due to the significant relationship
between the level of education and the quality of informed consent, it is
suggested that the consent form be adjusted based on the level of literacy of
patients. In this study, many people expressed the impossibility of contacting
the doctor to resolve the ambiguity and ask their questions remotely (55.2%),
which seems to have a significant effect on patients' trust in the doctor, so It is suggested that in future studies, the effect of
patients' contact with physicians on the quality of informed consent should be
investigated. In general, the quality of informed consent obtained in patients
referred to infertility treatment centers in Rasht in 1398, has been reported
as average.
Author contributions
SBMK, AM and ShD collected the date and
wrote the paper. KD revised and finalized the article. All members of this article read the manuscript
carefully and acknowledged it.
Acknowledgments
The present study is the result of a MD Degree in general medicine
that was approved by the Research Council of the Vice Chancellor for Research
and Technology of Guilan University of Medical Sciences
on 2019 with the code IR.GUMS.REC.1398.176 This project has been done with the
financial support of this center, and therefore the researchers consider it
necessary to express their gratitude to the esteemed deputy.
Conflict of interest
The authors declare that they have no conflicts of interest.
References
1. Novak E. Berek & Novak's gynecology: Lippincott Williams
& Wilkins; 2007.
2. Barrett
JC. The estimation of natural sterility. Journal Genus. 1986;42(3-4): 23-31.
3 .Asghari
F. Ethical issues in surrogate motherhood. Journal of Reproduction Infertility.
2008; 9(1): 30-35.
4. Joolaee
S, Hajibabaee F. Patient rights in Iran: a review article. journal Nursing
ethics. 2012; 19 (1): 45- 57.
5. Ghodsi
Z, Hojjatoleslami S. Knowledge of students about Patient Rights and its
relationship with some factors in Iran. journal Procedia- Social Behavioral
Sciences. 2012; 31: 345- 8.
6.
Gattellari M, Voigt KJ, Butow PN, Tattersall MH. When the treatment goal is not
cure: are cancer patients equipped to make informed decisions? Journal of
clinical oncology. 2002; 20 (2): 503- 13.
7.
Taghaddosinejad F, Akhlaghi M, Yaghmaei A, Hojjati A. A survey of obtaining
informed consent and acquit from admitted patients in EMAM KHOMEINI hospital.
Iranian Journal of Forensic Medicine. 2008; 14 (1): 12- 7.
8. Parsapoor
A, Mohammad K, Malekafzali H, Aalaedini F, Larijani B. Regarding patients'
right in Tehran University of Medical Sciences Hospitals. Iranian Journal of
Medical Ethics History of Medicine. 2009; 3 (1): 53- 64.
9.
Donovan JL. Patient decision making: the missing ingredient in compliance
research. International journal of technology assessment in health care.
1995;11(3):443-55.
10.
Badsar A, Rahbar Taramsari M, Latifi A, Attarchi M, Mohammadi Kojidi H. Quality
Assessment of Recording Informed Consent in Teaching Hospitals of Guilan
University. Journal of Guilan University of Medical Sciences. 2018;27(106):1-8.
11.
Mirbagher Ajorpaz N, Heidari S, Ranjbar N, Afshar M. Assessment Rate of Being
Conscious and Quality of Informed Consent Process in inpatients Undergoing
Surgery in Selected Hospitals of Isfahan in 2009. Qom University of Medical
Sciences Journal. 2011;5(3):53- 60.
12.
Taghadosinezhad F, Sheykha AA, Y aghmaei A, Rojaei M. A survey on obtaining
informed consent from patients admitted to shariati hospital (Tehran, Iran). Journal
of Medical Council of IRI. 2008;26(1):42-49.
13.
Mahmoodian H, Barzegar H. Evaluation of obtained informed consents from
patients undergoing gynecological surgery in a hospital in shiraz during 2014.
Iranian Journal of Medical Ethics History of Medicine. 2017;10(1):78-90.
14.
Meysami V, Ebrahimnia M, Saberi Isfeedvajani M, Khalagi K. Quality of Receiving
Patient’s Informed Consent in the Surgical Wards of a Military Hospital in
Tehran at 2016 and its Improvement Solutions. Journal of Military Medicine.
2018;19(5):513-22.
15.
Howlader MH, Dhanji AR, Uppal R, Magee P, Wood AJ, Anyanwu AC. Patients' views
of the consent process for adult cardiac surgery: questionnaire survey.
Scandinavian Cardiovascular Journal. 2004;38(6):363-8.
16.
San AJ, San RJ, Zuza B, Zunzarren F, Luri T, editors. Aspects of pre-
operational information of the patient in emergency surgery. Anales del sistema
sanitario de Navarra; 2000;23(3):509-16.
17.
Bottrell MM, Alpert H, Fischbach RL, Emanuel LL. Hospital informed consent for
procedure forms: facilitating quality patient-physician interaction. Archives
of Surgery. 2000; 135(1):26-33.
18.
NEMATOLLAHI M, SAKHDARI A. Amount of obtained informed consent from the
hospitalized patient to selected hospitals in shiraz city. 2015;11(6): 689-698.
19.
Sheikhtaheri A, Farzandipour M. Quality of informed consent process and factors
affecting it among patients undergoing surgery, an empirical study in hospitals
of Kashan, Iran. Hakim Research Journal. 2010;12(4):33-41.
20.
Joffe S, Cook EF, Cleary PD, Clark JW, Weeks JC. Quality of informed consent in
cancer clinical trials: a cross-sectional survey. Journal The Lancet.
2001;358(9295):1772-7.
21.
Mazur DJ. Why the goals of informed consent are not realized. Journal of
general internal medicine. 1988;3(4):370-80.
22.
Parsapour A, Parsapour MB, Larijani B. Informed consent, contents, conditions
and practical methods. Iranian Journal of Diabetes Metabolism. 2005;5:1- 14.
23.
Jaafarimehr E, Shahraz S, ZALI MR. Getting informed consent from patients
consistent legislation is mandatory. 2003;7(4):289-292.
24.
Lo B. Resolving ethical dilemmas: a guide for clinicians: Lippincott Williams
& Wilkins; 2012.
25.
Connelly J, J S. Refusal of treatment. organizador Ethics in primary care New
York: McGraaw- Hill. 2000:187-210.
26.
Abbasi M. The articles on medical law. Tehran: Legal Publications. 1999;143.
27.
YAGHMAEI F, MAHFOUZPOUR S, RAEIS AG, KAMALI P. Satisfaction with service
delivery in clients referring to urban health centers affiliated to Arak
University of Medical Sciences. 2007;2(4-5):45-51.
28.
McKeague M, Windsor J. Patients' perception of the adequacy of informed
consent: a pilot study of elective general surgical patients in Auckland. 2003;116(1170):U355.
29.
Minnies D, Hawkridge T, Hanekom W, Ehrlich R, London L, Hussey G. Evaluation of
the quality of informed consent in a vaccine field trial in a developing
country setting. BMC medical ethics. 2008; 9(1):15.
30.
Faghanipour S, Joolaee S, Sobhani M. Surgical informed consent in Iran- how
much is it informed? Nursing ethics.2014;21(3):314-22.