Providing patients with coherent, relevant information has implications for several aspects of mental healthcare, including engagement with services, concordance with treatment and informed consent. Health information enables patients to communicate more effectively with medical professionals, enabling them to take an active role in making decisionsabout theirtreatment, asisrecommended by the Royal College of Psychiatrists (www.rcpsych.ac.uk). The growth in mental health information providers may be viewed as a positive development in educating both people with mental illness and other members of the general public. In recent years, the establishment of organisations such as DISCERN (www.discern.org.uk) have published rating instruments to evaluate the quality of information provided to the public, and guidelines to assist information providers in developing relevant, high-quality and evidence-based information for users. Despite the general agreement of health organisations' regarding the benefits of providing patients with written information, there is a paucity of research on their opinions about the available mental health information and this may reflect the absence of user involvement until recently.

Mental health information produced by health organisations for patients varies in its focus and may not be appropriate to its target population. Some qualitative studies have found that certain patient groups wish to have more information regarding the aetiology, treatment options and potential medical complications available to them than is currently available. ^{Reference Prinjha, Chapple, Herxheimer and McPherson1} Other studies have shown that patient information leaflets must be tested on the target audience to ensure that they are patient oriented, ^{Reference Dickinson, Raynor and Duman2} a finding strongly supported by a study that found a large gap (as much as 5 years) between patient reading levels and the comprehension levels demanded by written materials provided for them. ^{Reference Davis, Crouch, Wills, Miller and Abdehou3}

A randomised controlled trial conducted in an orthopaedic centre in London showed that individuals given information leaflets prior to surgery scored higher on a questionnaire of recall than those who had given verbal consent only. ^{Reference Ashraff, Malawa, Dolan and Khanduja4} This has significant implications for the issue of informed consent. There is also evidence that providing people with information about their condition reduces stress. ^{Reference Kitamura5} Among individuals with psychiatric illness there is evidence that, contrary to fears that providing negative information would reduce treatment adherence, the opposite occurred. ^{Reference Hornung, Klingberg, Feldmann, Schonauer and Schulze Mönking6} The purpose of the present study was to examine patient preferences regarding a selection of the informational literature available to them on bipolar affective disorder and to elucidate what changes would make them more acceptable to the readership.

Method

The study was conducted in the Mater Misericordiae University Hospital, Dublin, Ireland. Psychiatric out-patients with a diagnosis of bipolar affective disorder who were currently attending out-patient clinics in the hospital or were attending a community clinic were included in the study.

Individuals were excluded if they were in-patients at the time of the study and if they were currently judged as too unwell to participate in the study. Given that the aim of this study was to examine their preferences for written information, individuals with English or literacy problems were also excluded. The authors acknowledge that literacy difficulties are commonplace in Ireland, affecting approximately 25% of the adult population according to the National Adult Literacy Association. Further research investigating issues of literacy and patient information in this group is warranted but lies outside the scope of this paper.

All individuals eligible for inclusion were asked to participate in the survey. Participants were contacted either during attendance at the out-patient clinics, by telephone or in writing. Those who agreed to participate in the study were asked to read each information leaflet and complete the questionnaires (Table 1) on each of the three leaflets and to state which they rated as best overall. The leaflets examined were those provided by the Royal College of Psychiatrists (London), a voluntary organisation in Ireland (Aware; www.aware.ie) and a UK-based patient information website run by general practitioners (www.patient.co.uk). Basic demographic data were collected from each participant (age and gender). It took approximately 1 h to read the leaflets and complete the questionnaire, and participants were advised that they would be reimbursed with a gift voucher to the value of €20 for their time. Participants were provided with a stamped addressed envelope to return the questionnaires, which were completed at home.

Table 1 Results from questionnaire

	Response to statement, n/N (%)
Area assessed	Aware	patient.co.uk	Royal College of Psychiatrists
Comprehensibility
I could understand most of what was mentioned in the leaflet (agree)	27/27 (100)	26/27 (96.3)	26/27 (96.3)
There were more than a few areas that I could not understand (disagree)	20/25 (80)	20/26 (76.9)	21/25 (84)
The leaflet could have been clearer in what it was saying (disagree)	17/24 (70.8)	20/25 (80)	19/24 (79.2)
Information content
I felt that the information in the leaflet was relevant to me (agree)	22/27 (81.5)	25/27 (92.6)	24/27 (88.9)
I was satisfied with the level of information in the leaflet (agree)	20/25 (80)	25/27 (92.6)	24/26 (92.3)
I would want to know more about any rare but potentially dangerous complications of my medication (agree)	21/26 (80.8)	21/27 (77.8)	18/26 (69.2)
The leaflet tells me about the need for blood tests, side-effects of medications, when to contact my doctor (agree)	14/26 (53.8)	22/26 (84.6)	24/26 (92.3)
The leaflet contained a number of different treatments for my condition, e.g. different medications, psychotherapy (agree)	20/26 (76.9)	22/25 (88)	21/25 (84)
The leaflet contained information about lifestyle to help me stay well, e.g. avoiding alcohol and drugs (agree)	21/26 (80.8)	22/25 (88)	25/26 (96.2)
The leaflet recommended other resources (books/organisations/websites) if I needed to get more information	26/27 (96.3)	22/26 (84.6)	25/25 (100)
The leaflet had information on support groups that I could contact (agree)	25/26 (96.2)	22/25 (88)	25/25 (100)
Impact
I think that this leaflet has given me information that will help me to manage my condition more effectively (agree)	24/27 (88.9)	22/27 (81.5)	25/26 (96.2)
Reading the leaflet made me less anxious about my illness (agree)	17/26 (65.4)	19/26 (73.1)	18/25 (72)
I would know how to get more information about my condition (agree)	25/27 (92.6)	26/27 (96.3)	26/26 (100)
I think this leaflet would be useful to other people who had recently been diagnosed with bipolar affective disorder (agree)	25/26 (96.2)	24/27 (88.9)	20/24 (83.3)

As there was no tool in existence to assess the suitability of information leaflets for patients and their satisfaction with this information, the authors of this study developed a questionnaire for this purpose. Each questionnaire (Table 1) contained 15 statements examining three aspects of the leaflet: comprehensibility; information content; impact of the leaflet on the patient's understanding of their illness. Participants indicated whether they agreed or disagreed with each statement in the questionnaire. The participants were masked to the source of each leaflet. The leaflets and questionnaires were stapled together in a different order and participants were asked to read the leaflets in the order received, so as to reduce order bias. The participants were informed that they could contact D.C.W. with any questions regarding the study.

Results

A total of 45 people with bipolar disorder were invited to participate in the study, and 27 did so. Of those who participated, 59.3% (n = 16) were male, and the median age of all participants was 44 years (range 17-70). Mean duration of illness was 16.04 years (s.d. = 9.39, range 2-40). Those who participated (n = 27) did not differ from those who did not participate (n = 18) in terms of gender (χ² = 0.805, P = 0.527) or age (Mann-Whitney U = 161.500, P = 0.059). Table 1 displays the number of participants who agreed or disagreed with each statement in the questionnaire (also expressed as a percentage of total responses for each statement). In instances where participants did not make a response for a particular statement, the number of individuals agreeing or disagreeing with the statement was recorded as a proportion of the total number of responses.

No relationship was found between rating ‘Which leaflet was best’ and gender (χ² = 2.253, d.f. = 2, P = 0.324), age group (χ² = 5.205, d.f. = 6, P = 0.518) or the order in which the leaflets were read (χ² = 7.464, d.f. = 10, P = 0.681). Mean duration of illness was not related to which leaflet each participant rated as best (F = 0.989, P = 0.390)

Discussion

This study suggests that the overall quality of information on bipolar affective disorder available in printed form from the selected online health services (Aware, patient.co.uk and the Royal College of Psychiatrists) is of a high standard and is understood by the majority of patients. However, a significant proportion of the study sample, approximately 20–30%, had some difficulty in understanding a number of areas within each leaflet. The participants' comments indicate that concise explanations and the absence of medical jargon may assist their comprehension of written information. This would also help to address the issue of varying literacy levels within patient groups.

Some information that medical professionals regard as desirable and which patients also wish to have, for example, the need for blood tests, side-effects of medication, and when people should seek medical advice is less consistently included in the leaflets of different organisations. The information leaflet provided by the Royal College of Psychiatrists was consistently rated more highly than the other two on its content, suggesting that professional bodies have an important role in patient education.

Of note, the two leaflets that were rated most highly both used quality assurance guidelines produced by internet-based health information organisations; DISCERN and HONcode (Health on the Net Foundation; www.hon.ch/). With the growing number of internet-based organisations producing health information it is important that doctors take an active role in directing people to websites that use quality assurance instruments in their development. ^{Reference Meredith, Emberton and Wood7} Websites and organisations usually stipulate if they have used quality assurance instruments in the production of health information leaflets.

A number of issues relating to informed consent were raised in this study. People with bipolar affective disorder wish to know more about the potential side-effects of the medication that they are receiving, an issue of particular relevance if patients are to be involved in decision-making about their treatment. In light of the concerns expressed about specific aspects of medication, such as their mechanism of action, providing clear explanations and information early in the course of the illness may be reassuring and may help to reduce the stigma associated with taking medication, as is evidenced by the participants' dislike of words such as ‘antipsychotics’ and ‘anticonvulsants’. This might also improve treatment adherence rates and ultimately long-term outcomes, as has been demonstrated in research conducted by other medical specialties. ^{Reference Greenfield, Kaplan and Ware8}

The finding of a significant relationship between information content and impact for the Aware leaflet suggests that special attention should be paid to this when developing leaflets. The wide confidence intervals undermine the robustness of this particular finding, coupled with the failure to identify such a relationship in the other two leaflets, although it was consistent with the findings in another study. ^{Reference Fallowfield, Hall, Maguire and Baum9} An interesting finding of this study was that although participants rated the Royal College of Psychiatrists' leaflet as the best of the three leaflets, they rated the Aware leaflet highest in terms of its usefulness to people recently diagnosed with bipolar affective disorder. This finding indicates that people's requirements for information may vary depending on their stage of illness.

The absence of a tool to measure patient satisfaction and to gather feedback on the informational sources on bipolar affective disorder necessitated the authors' production of such a tool for the purpose of this study. Although the tool used in this study exhibits face-validity, it may also be appropriate for the development of a tool which demonstrates content validity and internal consistency.

This study has a number of strengths and weaknesses that need to be highlighted. One of its strengths is that its findings can be generalised to patient groups from other inner-city out-patient departments, although the corollary that the needs of patients from other locations such as those from rural areas or those of other socioeconomic groups may not be identified in this study. Participants were masked to the source of the leaflets and there did not appear to be any relationship between the order in which participants read the leaflets and their rating of the leaflets. The main limitation is the study's small size; 60% of all those with bipolar affective disorder within the study population participated in the survey, however participants and non-participants did not differ on basic demographic data. Nonetheless, the results and statistical analysis in this paper should be interpreted within the context of the sample size. Other limitations include the restriction to one service and the fact that duration of illness was not controlled for in this study. Potential confounding factors such as prior knowledge of bipolar affective disorder, educational and socioeconomic status were also not controlled for. Additionally, as people with English and literacy difficulties were excluded from the study, the results may be biased towards the preferences of individuals with higher educational levels or socioeconomic status. The use of a new instrument to measure views on the leaflets might be considered a weakness. However, since there was no existing instrument, a pragmatic decision was made to use this one, which has face validity. This instrument should be the subject of detailed psychometric examination since it could have a place in future studies of this type. The use of Likert scales may have provided more information with respect to the degree of participant agreement or disagreement for each statement; however, the decision to use the agree/disagree scale was used in the interest of simplicity and to avoid central tendency, social desirability and acquiescence biases. Finally, patient involvement in developing the questionnaire would have provided further assurance that the study elicited individuals' preferences for information regarding their illness and this step should be considered in the development of any such tool.

In summary, this study emphasises the important role of mental health professionals in directing patients towards written information and internet websites. Furthermore, professional mental health organisations should be involved in developing or revamping such informational tools. There is a strong argument to be made for involving patients in such initiatives in the future.