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Scaling hypertension treatment in 24 low-income and middle-income countries: economic evaluation of treatment decisions at three blood pressure cut-points

Por: Hutchinson · B. · Walter · A. · Campbell · N. · Whelton · P. K. · Varghese · C. · Husain · M. J. · Nugent · R. · Kostova · D. · Honeycutt · A.
Objective

Estimate the incremental costs and benefits of scaling up hypertension care in adults in 24 select countries, using three different systolic blood pressure (SBP) treatment cut-off points—≥140, ≥150 and ≥160 mm Hg.

Intervention

Strengthening the hypertension care cascade compared with status quo levels, with pharmacological treatment administered at different cut-points depending on the scenario.

Target population

Adults aged 30+ in 24 low-income and middle-income countries spanning all world regions.

Perspective

Societal.

Time horizon

30 years.

Discount rate

4%.

Costing year

2020 USD.

Study design

Data sources

Institute for Health Metrics and Evaluation’s Epi Visualisations database—country-specific cardiovascular disease (CVD) incidence, prevalence and death rates. Mean SBP and prevalence—National surveys and NCD-RisC. Treatment protocols—WHO HEARTS. Treatment impact—academic literature. Costs—national and international databases.

Outcome measures

Health outcomes—averted stroke and myocardial infarction events, deaths and disability-adjusted life-years; economic outcomes—averted health expenditures, value of averted mortality and workplace productivity losses.

Results of analysis

Across 24 countries, over 30 years, incremental scale-up of hypertension care for adults with SBP≥140 mm Hg led to 2.6 million averted CVD events and 1.2 million averted deaths (7% of expected CVD deaths). 68% of benefits resulted from treating those with very high SBP (≥160 mm Hg). 10 of the 12 highest-income countries projected positive net benefits at one or more treatment cut-points, compared with 3 of the 12 lowest-income countries. Treating hypertension at SBP≥160 mm Hg maximised the net economic benefit in the lowest-income countries.

Limitations

The model only included a few hypertension-attributable diseases and did not account for comorbid risk factors. Modelled scenarios assumed ambitious progress on strengthening the care cascade.

Conclusions

In areas where economic considerations might play an outsized role, such as very low-income countries, prioritising treatment to populations with severe hypertension can maximise benefits net of economic costs.

A systematic review of the impact of compression therapy on quality of life and pain among people with a venous leg ulcer

Abstract

Aim

To gain a greater understanding of how compression therapy affects quality of life, this systematic review appraised existing published studies measuring the impact of compression therapy on health quality of life (HRQoL), and pain, among people with venous leg ulcers (VLU).

Method

Five databases were searched, and two authors extracted data and appraised the quality of selected papers using the RevMan risk of bias tool. Due to heterogeneity in the types of compression and instruments used to evaluate HRQoL, meta-analysis was not appropriate; thus, a narrative synthesis of findings was undertaken.

Results

Ten studies were included, 9 RCTs and one before-after study. The studies employed nine different HRQoL tools to measure the impact of a variety of compression therapy systems, with or without an additional exercise programme, versus other compression systems or usual care, and the results are mixed. With the use of the Cardiff Cardiff Wound Impact Schedule, the SF-8 and the SF-12, study authors found no differences in QoL scores between the study groups. This is similar to one study using QUALYs (Iglesias et al., 2004). Conversely, for studies using EuroQol-5D, VEINES-QOL, SF-36 and CIVIQ-20 differences in QoL scores between the study groups were noted, in favour of the study intervention groups. Two further studies using QUALYs found results that favoured a two-layer cohesive compression bandage and the TLCCB group, respectively. Results for the five studies that assessed pain are also mixed, with one study finding no difference between study groups, one finding that pain increased over the study period and three studies finding that pain reduced in the intervention groups. All studies were assessed as being at risk of bias in one or more domains.

Conclusion

Results were varied, reflecting uncertainty in determining the impact of compression therapy on quality of life and pain among people with a venous leg ulcer. The heterogeneity of the compression systems and the measures used to evaluate HRQoL make it a challenge to interpret the overall evidence. Further studies should strive for homogeneity in design, interventions and comparators to enhance both internal and external validity.

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