Community Case Management of the Severe Pneumonia With Oral Amoxicillin in Children 2-59 Months of Age
|First Received Date ICMJE||August 31, 2010|
|Last Updated Date||October 12, 2010|
|Start Date ICMJE||February 2008|
|Primary Completion Date||March 2010 (final data collection date for primary outcome measure)|
|Current Primary Outcome Measures ICMJE
||The development of clinical treatment failure at day 6 among those children initially evaluated for ARI needing assessment (ANA) by a LHW at the domiciliary level. [ Time Frame: At day 6 ] [ Designated as safety issue: No ]|
|Original Primary Outcome Measures ICMJE||Same as current|
|Change History||Complete list of historical versions of study NCT01192789 on ClinicalTrials.gov Archive Site|
|Current Secondary Outcome Measures ICMJE
|Original Secondary Outcome Measures ICMJE
|Current Other Outcome Measures ICMJE||Not Provided|
|Original Other Outcome Measures ICMJE||Not Provided|
|Brief Title ICMJE||Community Case Management of the Severe Pneumonia With Oral Amoxicillin in Children 2-59 Months of Age|
|Official Title ICMJE||Cluster Randomized Trial of Community Case Management of the Severe Pneumonia With Oral Amoxicillin in Children 2-59 Months of Age in Hala and Matiari District, Pakistan|
Two-arm cluster randomized controlled trial located in Hala district, Pakistan to determine the impact of using Lady Health Workers (LHW) of National Program for Family Planning and Primary Health Care to diagnose and manage severe pneumonia with oral amoxicillin on treatment failure rates at day 6 among 2-59 month old children. LHWs in the control arm receive a refresher in standard pneumonia case management. LHWs in the intervention arm receive standard training that is enhanced to include training in the recognition of severe pneumonia and its home management with oral amoxicillin. Clusters are by Union Council (UC), administrator units consisting of 7 to 25 LHWs; each UC is randomized to either enhanced pneumonia case management with oral amoxicillin therapy (intervention) for severe pneumonia or standard case management and referral to the nearest health facility for treatment (control). Process indicators reflecting the LHW's ability to assess, classify and treat pneumonia in the intervention group and cost-effectiveness data is also being collected.
Enhanced pneumonia case management and oral amoxicillin therapy for severe pneumonia delivered by LHWs in the community will result in a reduction in treatment failure among children 2 - 59 months of age with severe pneumonia who are treated by the LHW compared with those referred for care by the LHW.
Acute respiratory infection (ARI) is one of the leading causes of morbidity and mortality in children less than five years of age, and is responsible for over 2 million annual deaths in this age group. Of the 10.8 million global child deaths estimated in 2000, 34% were in South Asia and 21% of the total deaths were attributed to pneumonia. Inclusion of all deaths for which acute lower respiratory infections (ALRI) are an associated cause would increase these estimates by two to threefold. The ARI mortality burden is principally constituted by pneumonia. The median incidence of pneumonia in under-five children in developing countries is estimated to be 0.29 episodes (interquartile range 0.21-0.71) per child year. It is estimated that in the developing countries 150.7 million new pneumonia cases occur each year, of which 11-20 million (7-13%) are severe enough to require hospital admission. The region of the world with the highest incidence of pneumonia is South and South East Asia with an estimated 55.2 million episodes occurring in children under five years old. In the developed world, an estimated 14.7 million cases occur each year.
Recent trends indicate that Pakistan has begun to lag behind many regional countries in major indicators such as infant mortality rates (IMR). Currently, Pakistan has an IMR of 81/1000 live births and under-five mortality rate of 103/1000 live births. Annual number of child deaths in Pakistan is estimated at 565,000, giving Pakistan 4th ranking after India, Nigeria and China. Of more than 560,000 under-five deaths reported in Pakistan in 2001, 19% were due to pneumonia.
At the community level WHO guidelines recommend that trained health workers treat non-severe pneumonia with an oral antibiotic and refer children with severe pneumonia (i.e. lower chest wall indrawing [LCI] present) to a local health facility to be treated by injectable antibiotic (and oxygen, as required). A series of WHO sponsored randomized controlled trials and a subsequent meta-analysis of results demonstrated that these guidelines implemented by community-based health workers (CHWs) resulted in a 24-27% reduction in total child mortality and a 36-42% reduction in pneumonia mortality in these research settings.Pandey et al. have shown 28% reduction in total under-five mortality using locally trained community health workers to detect and treat pneumonia.
It has been previously shown that oral amoxicillin is an effective treatment for (WHO-defined) severe pneumonia in children. More recently a multi-centre randomized controlled trial (RCT) conducted in eight countries has shown that oral amoxicillin is as effective as injectable penicillin for the treatment of severe pneumonia in a hospital setting. For non-severe pneumonia two large multicentre RCTs in Pakistan and India have shown that three-days' treatment with oral amoxicillin therapy was equivalent to five-days' treatment. Non-adherence was the most important risk factor for treatment failure in these studies and was also significantly related to longer duration of therapy. In addition, it has been shown in studies from India and Bangladesh/Indonesia that the three-days' antibiotic therapy resulted in lower prevalence of resistant organisms 15 days after initiation of therapy, when compared with a five-days' therapy.
The non-severe pneumonia and severe pneumonia studies mentioned above were all hospital based clinical efficacy studies (several conducted by members of this project team) so that close monitoring and follow-up could be assured. There is now a need to demonstrate the effectiveness of these management strategies for severe pneumonia in the community when implemented by CHWs. If the findings of the hospital-based RCTs can be replicated in community settings then this may have a very significant impact on global policy in community-based management of ARI in young children. Children with very severe pneumonia or very severe disease (such as those who have danger signs) will continue to be referred for hospital treatment following current WHO IMCI guidelines. The use of oral antibiotic for treating severe pneumonia at the community level has many potential benefits. This case management strategy, if shown to be effective, could:
LHWs in Pakistan are very well placed in the community and, in Hala district comprise the mainstay of the primary health care system. LHWs are trained in standard ARI case management based on WHO's guidelines and the program has an active health education component. Management of pneumonia through standard case management, part of IMCI - an approach developed by the WHO and UNICEF - is the principal strategy for reducing ARI mortality.LHWs employing the IMCI approach classify the severity of respiratory infections by observing a child for the key signs of pneumonia: chest in-drawing and fast breathing. With the help of the refresher course recently developed by the LHW program - based on the IMCI algorithm - LHWs will be additionally trained in identifying and managing severe pneumonia at the community level and improve their skills in promotion of care-seeking for ANA.While it is hoped that these measure will markedly reduce overall childhood mortality and pneumonia related mortality in the community, the study being proposed here will measure the effect of enhanced case management of ANA by LHWs in reducing the clinical treatment failure rate among children 2-59 months of age.
DEFINITION OF TREATMENT FAILURE
Suspected treatment failure will be determined by the LHW on subsequent home visits after the child has been enrolled. The LHW will immediately contact the Lady Health Worker Supervisor (LHS) who will independently confirm each case of failure. The provision of clinical care (i.e. arranging referral) will not be delayed should there be a delay between the identification of suspected treatment failure and confirmation by the LHS.
Clinical Treatment Failure through day 5 for children 2-59 months will be defined as:
Case management in Control Arm:
The standard of care and training for LHWs in the control clusters will be the current curriculum and training workshops. All LHWs in the control clusters will receive a refresher in management of ARI through LHW supervisors. They will continue to treat non-severe pneumonia and other cases of ARI with oral co-trimoxazole. Skills in recognition of severe pneumonia will be reinforced in the refresher course and LHW will be instructed to continue to evaluate and refer these cases to the Rural Health Center (RHC) or district general hospital for admission and treatment (with injectable chloramphenicol or ampicillin) as per current policy. Patients who refuse to go to any health facility for treatment (either public or private), will not be offered enhanced home treatment with amoxicillin but will be provided oral co-trimoxazole as per GoP policy. These children will not be included in final analysis for treatment failure, but will be recorded in the overall epidemiological data from the area. Oral cotrimoxazole is provided free of cost per GOP policy. Any compensation for research related injury including hospitalizations and transportation to and from the health clinic will be borne by the study. Subjects who develop signs of penicillin allergy will be treated with an antihistamine at no cost and transported to the local health facility at the cost of project.
Case management in Intervention Arm:
LHWs in the intervention clusters will have specific training to enhance their ability to evaluate and treat ARI. This will include post-training evaluation of their ability to assess and classify non-severe and severe pneumonia and manage non-severe pneumonia. This will consist of an improved training module for the LHWs (respiratory care component) with an amended treatment plan for severe pneumonia with oral amoxicillin. The enhanced respiratory training module for LHWs will include prompt recognition and referral of study treatment failures (including very severe disease) by day 3, based on objective criteria of fever and lower chest indrawing. In the intervention arm LHWs who diagnose severe pneumonia will not refer the patient to the nearest facility (RHC with admitting facility or district general hospital), but instead will offer treatment with oral amoxicillin (90 mg/kg/day divided BID) at home for 5 days with close follow-up. Additionally, these LHWs will continue to treat non-severe pneumonia entirely in the community with a 3 days course of oral amoxicillin as per standard of practice. The study drug (oral amoxicillin) is provided free of cost per GOP policy. Any compensation for research related injury including hospitalizations and transportation to and from the health clinic will be borne by the study.
For severe pneumonia, oral amoxicillin will be provided as a suspension at a total dose of 90 mg/kg per day for 5 days
Patients who vomit within a half an hour of oral treatment will receive a repeat dose of amoxicillin. This will be attempted three times over 30 minutes. If the patient fails three attempts they will be considered a treatment failure.
Sample Size Calculation - Primary Objective
The investigators have calculated a sample size that will allow us to test the following null hypothesis:
Null hypothesis: The proportion of children who fail treatment in the treatment group will not be greater than the proportion of those who fail in the control group.
The method of Hayes and Bennett21, which employs the following equations, was used to calculate the number of clusters. The sample size calculation was then repeated using PASS software using procedures for cluster randomized equivalency trial Because the number of clusters was fixed, the investigators calculated the sample size for the trial by solving for the number of participants required given a set of assumptions.
c =2 + (Zα/2 + Zβ)2 * [π0*(1-π0)/n +π1*(1-π1)/n+k2*(π02+π12)]/(π0-π1)2
where π0 = prop int, π1=prop control, n=number per cluster, k=coefficient of variation
Below the investigators detail the assumptions used in sample size calculations and provide justifications for these assumptions:
Based on these assumptions, the investigators conclude that they will need to enroll 290 cases of severe pneumonia per cluster among 9 clusters per arm (total 18 clusters) over two years, for a total of 5,233 cases of severe pneumonia.
|Study Type ICMJE||Interventional|
|Study Phase||Not Provided|
|Study Design ICMJE||Allocation: Randomized
Intervention Model: Single Group Assignment
Masking: Open Label
Primary Purpose: Treatment
|Condition ICMJE||Severe Pneumonia|
|Study Arm (s)||
|Publications *||Soofi S, Ahmed S, Fox MP, MacLeod WB, Thea DM, Qazi SA, Bhutta ZA. Effectiveness of community case management of severe pneumonia with oral amoxicillin in children aged 2-59 months in Matiari district, rural Pakistan: a cluster-randomised controlled trial. Lancet. 2012 Feb 25;379(9817):729-37. Epub 2012 Jan 27.|
* Includes publications given by the data provider as well as publications identified by ClinicalTrials.gov Identifier (NCT Number) in Medline.
|Recruitment Status ICMJE||Completed|
|Completion Date||May 2010|
|Primary Completion Date||March 2010 (final data collection date for primary outcome measure)|
|Eligibility Criteria ICMJE||
|Ages||2 Months to 59 Months|
|Accepts Healthy Volunteers||No|
|Contacts ICMJE||Contact information is only displayed when the study is recruiting subjects|
|Location Countries ICMJE||Pakistan|
|NCT Number ICMJE||NCT01192789|
|Other Study ID Numbers ICMJE||665-Ped/ERC-06|
|Has Data Monitoring Committee||Yes|
|Responsible Party||Dr Zulfiqar Ahmed Bhutta, Aga Khan University|
|Study Sponsor ICMJE||Aga Khan University|
|Information Provided By||Aga Khan University|
|Verification Date||March 2010|
ICMJE Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP