The study shows that implementing an eCDSS to support IMCI implementation in PHC clinics in KZN, South Africa, failed to improve clinical care for sick children aged 2 months to five years. The motivation for implementing eIMCI in our setting was to improve adherence to the guidelines and improve prescribing practices [1]. However, our study showed that these aims were not achieved. eIMCI practitioners had poor computer skills, and they missed out components of the algorithm, failed to identify most children at-risk of screening conditions, and were more likely to prescribe an unnecessary antibiotic. A process evaluation conducted alongside the RCT and presented elsewhere showed poor eIMCI uptake during the eIMCI implementation period [28]. These findings contrast with the findings of studies of other electronic IMCI support systems, where the eCDSS resulted in a more comprehensive assessment and more rational and consistent prescribing [4, 21, 22].
The aim of eIMCI implementation was to standardize IMCI assessments, to ensure that children received comprehensive care at every visit. Management of sick children is complex and eIMCI provided a stricter framework for IMCI implementation that was less reliant on the ability of individual IMCI practitioners to classify correctly and identify all required treatments using multiple algorithms [20]. As eIMCI practitioners entered the clinical history and findings into the computer when prompted, eIMCI generated classifications, treatments and counselling messages for each child. However, our study showed that eIMCI practitioners were more likely than pIMCI practitioners to omit presenting symptoms, suggesting that eIMCI practitioners failed to record that these symptoms were present. This may have been a result of poor computer skills leading to difficulties and errors in navigating eIMCI, in particular moving backwards to include symptoms mentioned by mothers later in the consultation. High workloads and time pressure are likely to have contributed to practitioners omitting symptoms.
The assumption that making all components of the eIMCI assessment mandatory would result in more comprehensive IMCI implementation, failed to consider or address underlying reasons for poor IMCI implementation. Our findings suggest that practitioners skip over aspects of the algorithm even when these are compulsory and fail to identify signs of underlying conditions even when the assessment of these is mandatory. We suggest that the reasons for poor eIMCI implementation may be the same as for poor IMCI implementation generally, which include inadequate knowledge and training, lack of confidence in the guidelines, overwork, lack of motivation and time constraints[17]. Undertaking a comprehensive assessment is time consuming in busy clinics, and using a computer-based system to force practitioners to work through all components of the algorithm is unlikely to lead to effective implementation unless practitioners are convinced of the value of these assessments. Studies have found that to be successful it is important that an eCDSS does not disrupt the work flow or inconvenience practitioners as this will discourage its use [1], and more than half ultimately fail [29]. eIMCI consultations took significantly longer than pIMCI consultations, and it is likely that having to do a comprehensive assessment contributed to this. Any initiative that is perceived as adding to the workload is unlikely to be accepted.
The proportion of children receiving correct classifications for screening symptoms (malnutrition, HIV and TB) was higher in the eIMCI group, where completion of screening assessments was mandatory for all children. This appeared to indicate an improvement in the comprehensive assessment by eIMCI practitioners, but on closer analysis this improvement was mainly due to large numbers of children receiving correct negative classifications and there was no improvement in identification of children screening positive. Only a small proportion of children screen positive but it is important that they are identified to prevent life-threatening illness. Possible explanations for poor performance include that eIMCI practitioners lacked the skills to identify signs of anaemia, HIV or TB, or that they skipped through these components of the algorithm by guessing the most likely answers to save time. It is notable that in South Africa the TB and HIV screening algorithms are local adaptations, and are lengthy, complex, and time-consuming, which may have contributed to a reluctance to implement these algorithms.
Another key aim of an eCDSS is to improve rational prescribing [4], but our study showed no improvement in correct prescribing among eIMCI participants. On the contrary, eIMCI practitioners were more likely to give unnecessary medication. One in 10 children managed by eIMCI practitioners received an antibiotic not indicated by IMCI, more than double the proportion in the pIMCI group. This is in contrast to other studies which have shown substantial improvement in prescribing practices [21, 30]. However, several studies have also highlighted conflict and uncertainly when health workers disagreed with the eCDSS, and in some cases users were unhappy that the tool prevented them from making decisions based on their own clinical acumen [5]. This highlights the complexity of decision-making around clinical practice and the importance of building confidence in the new system. It is well established that providing guidelines alone is insufficient to change clinical practice, and there is no reason why this should be different just because the guidelines are electronic. More research is required to understand the underlying reasons for deviating from recommended prescribing practices.
Another important barrier to eIMCI implementation was the lack of computer skills among eIMCI practitioners, which was likely to have created multiple barriers and disincentives to eIMCI implementation, including contributing to the increase in consultation time. Currently computers in clinics are only used for administrative purposes and eIMCI nurses had little or no experience with computers either at home or in the workplace, and were unfamiliar with the concept of using a computer during the consultation [28]. Other studies across Africa show that there is frequently poor computer knowledge and skills, as well as poor access to computers [7], so it is important to pilot new eCDSSs carefully to ensure that computer skills are not a barrier to implementation [31]. In particular, it is likely that the decision to use desktop computers rather than a touch screen on a tablet computer, which would have been more user friendly and portable, had an adverse effect on implementation. Using a desktop computer prevented eIMCI practitioners from using eIMCI when they were deployed in other areas of the clinic.
These findings should be considered in the light of the potential broader benefits of using eCDSSs in the future, including that guidelines can be quickly and easily updated to ensure that they are always current without the need for re-training. Electronic guidelines have potential to provide a health information system to record clinic attendances for sick children, eventually substantially reducing or eliminating the need to collect data. eCDSSs can be an important tool for facilitating task shifting to lower cadres of health worker, for example eIMCI could be adapted to provide guidelines for Community Health Workers to assess sick children in the household. These benefits will increase as more electronic or e-Health initiatives are adopted, and the infrastructure and support costs are shared between a variety of initiatives. However, careful attention needs to be paid to the barriers to implementation including aligning the eCDSS with existing workflow, supporting computer skills, and building trust and confidence in the expert system.
Strengths and weaknesses
This study employed a strong methodology. However, it is likely that the participants performance was affected by the presence of the research team in the clinic, although they were not present in the consulting room. A limitation of the repeat assessment by the IMCI expert was that the condition of the child could have changed between the two assessments. To minimize this the reassessment was done as soon as possible after the completion of the consultation. Although this possibility cannot be excluded it should apply equally to the intervention and control groups. Another weakness was that the sample size was inadequate to evaluate IMCI practitioners’ performance in assessing those conditions that were rarely seen for example severe classifications, or positive screening conditions.