Private health care market shaping and changes in inequities in childhood diarrhoea treatment coverage: evidence from the analysis of baseline and endline surveys of an ORS and zinc scale-up program in Nigeria.

BACKGROUND: Nearly 90,000 under-five children die from diarrhoea annually in Nigeria. Over 90% of the deaths can be prevented with oral rehydration salt (ORS) and zinc treatment but coverage nationally was less than 34% for ORS and 3% for zinc with wide inequities. A program was implemented in eight states to address critical barriers to the optimal functioning of the health care market to deliver these treatments. In this study, we examine changes in the inequities of coverage of ORS and zinc over the intervention period. METHODS: Baseline and endline household surveys were used to measure ORS and zinc coverage and household assets. Principal component analysis was used to construct wealth quintiles. We used multi-level logistic regression models to estimate predictive coverage of ORS and zinc by wealth and urbanicity at each survey period. Simple measures of disparity and concentration indices and curves were used to evaluate changes in ORS and zinc coverage inequities. RESULTS: At baseline, 28% (95% CI: 22-35%) of children with diarrhoea from the poorest wealth quintile received ORS compared to 50% (95% CI: 52-58%) from the richest. This inequality reduced at endline as ORS coverage increased by 21%-points (P <  0.001) for the poorest and 17%-points (P <  0.001) for the richest. Zinc coverage increased significantly for both quintiles at endline from an equally low baseline coverage level. Consistent with the findings of the pairwise comparison of the poorest and the richest, the summary measure of disparity across all wealth quintiles showed a narrowing of inequities from baseline to endline. Concentration curves shifted towards equality for both treatments, concentration indices declined from 0.1012 to 0.0480 for ORS and from 0.2640 to 0.0567 for zinc. Disparities in ORS and zinc coverage between rural and urban at both time points was insignificant except that the use of zinc in the rural at endline was significantly higher at 38% (95%CI: 35-41%) compared to 29% (95%CI, 25-33%) in the urban. CONCLUSION: The results show a pro-rural improvement in coverage and a reduction in coverage inequities across wealth quintiles from baseline to endline. This gives an indication that initiatives focused on shaping healthcare market systems may be effective in reducing health coverage gaps without detracting from equity as a health policy objective.

Program evaluation of an ORS and zinc scale-up program in 8 Nigerian states.

BACKGROUND: In Nigeria, diarrhea is the second leading killer of children under five. Between 2012-2017, the Clinton Health Access Initiative, Inc. (CHAI) and the Government of Nigeria implemented a comprehensive program in eight states aimed at increasing the percentage of children under five with diarrhea who were treated with zinc and oral rehydration solution (ORS). The program addressed demand, supply, and policy barriers to ORS and zinc uptake through interventions in both public and private sectors. The interventions included: (1) policy revision and partner coordination; (2) market shaping to improve availability of affordable, high-quality ORS and zinc; (3) provider training and mentoring; and (4) caregiver demand generation. METHODS: We conducted cross-sectional household surveys in program states at baseline, midline, and endline and constructed logistic regression models with generalized estimating equations to assess changes in ORS and zinc treatment during the program period. RESULTS: In descriptive analysis, we found 38% (95% CI = 34%-42%) received ORS at baseline and 4% (95% CI = 3%-5%) received both ORS and zinc. At endline, we found 55% (95% CI = 51%-58%) received ORS and 30% (95% CI = 27%-33%) received both ORS and zinc. Adjusting for other covariates, the odds of diarrhea being treated with ORS were 1.88 (95% CI = 1.46, 2.43) times greater at endline. The odds of diarrhea being treated with ORS and zinc combined were 15.14 (95% CI = 9.82, 23.34) times greater at endline. When we include the interaction term to investigate whether the odds ratios between the endline and baseline survey were modified by source of care, we found statistically significant results among diarrhea episodes that sought care in the public and private sector. Among cases that sought care in the public sector, the predictive probability of treatment with ORS increased from 57% (95% CI = 50%-65%) to 83% (95% CI = 79%-87%). Among cases that sought care in the private sector, the predictive probability increased from 41% (95% CI = 34%-48%) to 58% (95% CI = 54%-63%). CONCLUSIONS: Use of ORS and combined ORS and zinc for treatment of diarrhea significantly increased in program states during the program period.

Effect of enhanced detailing and mass media on community use of oral rehydration salts and zinc during a scale-up program in Gujarat and Uttar Pradesh.

BACKGROUND: The Clinton Health Access Initiative implemented a program from 2012-2016 to increase use of oral rehydration salts (ORS) and zinc to treat diarrhea in children under five in three states in India: Gujarat, Madhya Pradesh, and Uttar Pradesh. The program interventions included detailing and development of a rural supply chain to reach private rural health care providers, training of Accredited Social Health Activists (ASHAs), technical support to the state governments, and a mass media campaign targeted at caregivers. In Gujarat and Uttar Pradesh, some of the program activities, such as detailing and ASHA trainings, were targeted to high-burden focal districts, thus providing an opportunity to study their effect compared to statewide activities that covered all districts, such as the mass media campaign. Our study aimed to estimate the effect of activities on ORS and zinc use. METHODS: Household surveys were conducted at two points during the program and in both focal and non-focal districts. We used a difference-in-difference quasi-experimental approach to estimate the effect of the enhanced activities in focal districts and mass media campaign on the odds of a child being treated with ORS and zinc. FINDINGS: Focal district interventions were associated with a significant increase in the odds of a diarrhea episode receiving ORS in Gujarat and Uttar Pradesh. Living in focal districts increased the odds of receiving ORS in Gujarat and Uttar Pradesh by factors of 3.42 (95% CI = 1.39-8.33) and 2.29 (95% CI = 1.19-4.39), respectively. Focal district interventions were also associated with 15.02 (95% CI = 2.97-75.19) greater odds of receiving both ORS and zinc in Gujarat. In Uttar Pradesh, where the mass media campaign was focused, exposure to the campaign further modified the odds of receiving ORS and combined ORS and zinc by 1.38 (95% CI = 1.04-1.84) and 1.57 (95% CI = 1.01-2.46), respectively. CONCLUSION: Comprehensive public and private provider interventions combined with mass media are effective strategies for increasing ORS and zinc use.