The phrase "comparable period" refers to a specific time period that is being compared to another time period. It helps to understand and analyze if there have been any changes, trends, or developments over time. Full definition
The new projections are based on leading research into contemporary and historical climate data, but also new scientific reconstructions of the only comparable period in human history: the last Ice Age. (sciencedaily.com)
As it turned out, there were 72 strokes on and after match days and 52 during comparable periods when no matches were played. (sciencedaily.com)
Only one of my 7 or so positions failed to increase their dividend on the prior comparable period, and that company held the dividend flat. (australiandividendinvestor.com)