ArticleInternational journal of environmental research and public health2020
Assessing Seasonality Variation with Harmonic Regression: Accommodations for Sharp Peaks.
Article in International journal of environmental research and public health, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.
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Who cites it
16 citing papers in PubMed.
- Seasonality of underweight among infants 1-11 months old in Niger: an exploratory analysis of data from a cluster-randomised trial.BMJ global health · 2025Trial
- Seasonality and risk factors of relapse to acute malnutrition: a multi-country prospective cohort study in Mali, South Sudan, and Somalia, 2021-2022.Journal of public health policy · 2026Article
- Could seasonal patterns in ECT use impact service delivery? A nationwide study.International journal of mental health systems · 2026Article
- Out-of-Hospital Cardiac Arrest Ambulance Delay Zones and AED Placement in a Southern Brazilian City.International journal of environmental research and public health · 2025Article
- Effects of zooplankton abundance on the spawning phenology of winter-spawning Downs herring (Clupea harengus).PloS one · 2025Article
- Significant Turning Point: Common Buzzard (Environmental science & technology · 2024Article
- Occurrence ofVeterinary world · 2024Article
- Impact of four years of annually repeated indoor residual spraying (IRS) with Actellic 300CS on routinely reported malaria cases in an agricultural setting in Malawi.PLOS global public health · 2024Article
- Application of improved harmonic Poisson segmented regression model in evaluating the effectiveness of Kala-Azar intervention in Yangquan City, China.Frontiers in public health · 2024Article
- High Variability Periods in the EEG Distinguish Cognitive Brain States.Brain sciences · 2023Article
- Quantifying the impact of COVID-19 on essential health services: a comparison of interrupted time series analysis using Prophet and Poisson regression models.Journal of the American Medical Informatics Association : JAMIA · 2023Article
- Article
- Empirical assessment of alternative methods for identifying seasonality in observational healthcare data.BMC medical research methodology · 2022Observational
- How Seasonality of Malnutrition Is Measured and Analyzed.International journal of environmental research and public health · 2021Review
- An analecta of visualizations for foodborne illness trends and seasonality.Scientific data · 2020Article
- Effects of Data Aggregation on Time Series Analysis of Seasonal Infections.International journal of environmental research and public health · 2020Article
Corrections and comments
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Authors and funding
7 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The use of the harmonic regression model is well accepted in the epidemiological and biostatistical communities as a standard procedure to examine seasonal patterns in disease occurrence. While these models may provide good fit to periodic patterns with relatively symmetric rises and falls, for some diseases the incidence fluctuates in a more complex manner. We propose a two-step harmonic regression approach to improve the model fit for data exhibiting sharp seasonal peaks. To capture such specific behavior, we first build a basic model and estimate the seasonal peak. At the second step, we apply an extended model using sine and cosine transform functions. These newly proposed functions mimic a quadratic term in the harmonic regression models and thus allow us to better fit the seasonal spikes. We illustrate the proposed method using actual and simulated data and recommend the new approach to assess seasonality in a broad spectrum of diseases manifesting sharp seasonal peaks.
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