Transcript
Belinda Platt So, my name’s Belinda Platt, and today I’d like to talk to you about the prevention of mental illness in children of parents with depression. My talk’s split up into three parts. I’ll start by telling you about why parental depression is a risk factor for child mental illness. I’ll then go on to talk about the evidence base for preventive interventions for this target group, and, at the end, I’ll talk about some of the hurdles that we face when we’re trying to implement prevention into practice, and I hope you’ll stay until the end, because I’ve got a good news story to tell you.
So, you might have heard that depression runs in families, and this study, which you can see on the left-hand side, followed around 200 children over nearly 40 years of their life, and measured the onset at which they experienced an episode of depression. And as you can see from the red line, children who had a parent with depression were around twice as likely during adolescence to experience an episode of depression, compared the children who didn’t have a parent with mental illness. And we know that this is due to a range of factors, so it’s partly to do with biology and environment, but it’s also to do with the way that parents behave, the exposure that their children have to their thoughts and their feelings. But it’s not all doom and gloom because, as we know, these factors, the majority of them at least, are modifiable, and it’s important to note, as well, that the majority of children with a parent with mental illness do not go on to develop mental illness themselves.
Nevertheless, in 2012, the World Health Organization identified the implementation of evidence-based prevention for the children of depressed parents as a public health priority. In 2018, we conducted an international review of the literature. We found seven trials, including 935 children, looking at the effectiveness of psychological interventions for this target group. We found a wide range of interventions. The interventions varied, whether they included children, or just parents, whether they were family based, how many sessions they involved, and what the contents of those sessions were. But, on the whole, on average, these interventions are effective, at least in the short to midterm. And so, you can see in the green box at the bottom that children who didn’t receive an intervention were around twice as likely as those who did to experience an episode of depression across a two to three year period.
And you might be wondering what these interventions look like. So, here’s one intervention, the “Family and Group-Based Cognitive Behavioural Intervention” developed by Bruce Compas and his colleagues at Vanderbilt University. The programme’s split up into three parts, and involves in – sessions as well for parents as well as their children. In the first few sessions, the families are altogether, they learn what about depression is, why it runs in families, and what we can do about it. In other sessions, children are alone with one Group Leader, where they learn various evidence-based coping strategies for dealing with stress. Parents go into a separate room with another Group Leader, and learn how to provide structure and warmth during episodes of depression. They also learn about the importance of getting support so that they can also support and provide for their children. On average, Bruce Compas and his colleagues found this intervention roughly halved the risk of depression in children of parents with depression across two years.
As you may know, many of the interventions to prevent mental ep – illness in children of depressed parents have been developed and evaluated in the USA. And so one thing we wanted to do was to take this intervention, which had been found to be effective there, adapt it to German language and culture, and re-evaluate it. We did this across five years, with 135 children from 100 families, and the families were split into two groups. They either received our intervention, or they received no intervention, treatment as usual.
I should say in advance that the intervention was widely accepted by families. So although we found diff – we found it difficult to recruit families in the first place, once they took part in the intervention, they generally stayed until the end. And here you can see some data on the effectiveness of the intervention in our study. On the left-hand side, you can see that children who didn’t receive any intervention during the 15 month period much more frequently experience mental illness than children who did take part in the intervention. Although these numbers, the absolute numbers, are relatively small, so we’re reluctant to conduct statistical analyses.
On the right-hand side, you can see data we collected from the children themselves on the severity of their internalising symptoms. That means in symptoms of depression and anxiety. And, as you can see, in the blue line, the in – the risk of depression increased across time for children who didn’t receive the intervention, whereas, those who did receive our intervention showed a slight reduction in their symptomology. And the longer I’ve been in this field of research, the more I’ve realised that what we know works in the lab is rarely implemented in practice, and so I’ve been more increasingly interested in understanding what those barriers are, so that we can develop more interventions that are implemented into practice. My first encounter with implementation research was when we complemented the quantitative data we collected in the randomised control study with qualitative analysis of semi-structured interviews and pilot group studies that we conducted with families who took part in our intervention.
We asked them what they found particularly helpful, what they put into practice afterwards, and what was more difficult for them. And, as you can see from the quotes, there were several themes that emerged. Children found the coping strategies we taught them to be particularly helpful, and they were putting those into practice long after we finished the intervention. Parents reported it was particularly helpful to have the experience to meet other parents who are affected and share their experiences with each other. What was difficult? Alongside the time commitment that was required for the intervention, some parents reported that they would have rather taken the – part in the intervention once their depression had been more stabilised.
So, taking account into the – taking these factors into account, and due to the corona pandemic in 2020, we were forced to take our intervention online. We’d already digitalised some of the contents that participants completed between sessions, but due to the pandemic, we also conducted the intervention sessions themselves online. In total, we took 37 families into the study and we split them into two groups, those who received the intervention, and those who didn’t. And in this slide, you can see the various different constellations and families that we had in our five groups in total. We were particularly pleased that we had a number of single parent families who took part.
We’re still analysing the effectiveness data from this study, but what we do have is a number of implementation outcomes that are quite valuable and important to take in consideration. So, one interesting finding was that very few of our families came to us through colleagues, through Clinicians, through clinical services. Rather, the majority of people found out about the study via public advertisements and newspaper articles, and one thing that we’ve experienced during the study is the value of publishing newspaper articles that destigmatise the issue of seeking help for parental mental illness.
So, because we’d had some difficulties recruiting families to our intervention, we also decided to conduct an online survey with these families who didn’t feel able to take part. In total, there were 247 of them, and we found several themes that emerged that were particularly important. Firstly, many families felt overburdened, either by their depression or by the pandemic, and this was one thing that stopped them from wanting to take part. Secondly, many families encountered feelings of guilt or shame, they might have been embarrassed about their depression, or they didn’t want to open up in front of other families. Thirdly, many of the families felt that taking part in the intervention would remind them about previous episodes of depression, and that was what held them back.
So, I promised you I was going to share a success story, and here it goes. In German law, there were some changes recently, so that public health insurance companies are forced to provide preventive financial support for their clients. And we applied last year to have our programme, an adapted version of it at least, certified by the governing body, and in July 2024, we were successful in our certification. So, we’re currently running a group for families affected by depression and looking forward to evaluating its implementation in practice.
I want to finish my talk by say – take – summarising some key takeaway messages. Parental depression can have a significant impact on children’s risk of mental illness, but I hope I’ve been able to persuade you that evidence-based interventions are effective, at least in the short-term. However, the implementation of evidence-based interventions into practice depends on several things the availability of financial resources, the availability of appropriate structures, and the extent to which service users are involved in the development and implementation.
Thank you for taking the time to listen to my presentation, and if you have an interest in my research group and the things we are doing, please don’t hesitate to contact me.