Table 1 Sample of studies using population size or density thresholds
From: A geographic analysis of population density thresholds in the influenza pandemic of 1918–19
Study | Area studied | Time period studied | Unit of analysis | Thresholds used | Reasons for selecting threshold |
|---|---|---|---|---|---|
McSweeney et al. [65] | New Zealand | October 17 - December 27, 1918 | Entire country was divided into cities, large towns, small towns, and counties | Cities (> 20,000) | Not specified |
Garrett [55] | United States | 1918 - 1919 | Individual states and 49 cities | Cities (> 100,000) | Data availability |
Kolte et al. [66] | Denmark | 1917 - 1921 | 22 counties, each divided into countryside and towns | Capitals, provincial towns, rural areas | Based on weekly reports sent to county health officials |
Nishiura and Chowell [60] | Japan | Kanagawa, 199 regions | Cities (> 20,000); Large towns (5,000 - 20,000); Small towns (2,000 - 5,000); Villages (< 2,000) | McSweeney et al. [65] and 5,000 minimum population size for town status in Japan | |
Chowell [13] | England and Wales | June 29, 1918 - May 10, 1919 | 305 administrative units, 62 counties | Cities, towns, and rural areas | Urbanization not defined |