The peak
incidence rate of
breast cancer among U.S. women occurred in
1999, with a rate of
142.3 per 100,000 population. This year stands out as the highest recorded rate over the provided timeframe, emphasizing a significant
health concern during that period.
Overall Trend from 1975 to 2020
Analyzing the trend from
1975 to
2020, the data reveals a general increase in breast
cancer incidence rates, starting from
106.0 per 100,000 population in 1975 to reaching
124.7 per 100,000 population in 2020. This upward trend underscores the growing prevalence of
breast cancer among U.S. women over the years.
Decrease in Incidence Rate from 2019 to 2020
A noteworthy decrease in the incidence rate was observed between
2019 and
2020, from
137.4 to
124.7 per 100,000 population. This represents a significant year-over-year reduction, marking a positive shift in the fight against breast cancer.
Stability in Incidence Rates in the Early 2010s
Between
2010 and
2015, breast cancer incidence rates showed remarkable stability, fluctuating slightly around the
130 per 100,000 population mark. This period of relative stability suggests a plateau in the incidence rate trend during these years.
Lowest Incidence Rate in 1980
The lowest incidence rate in the dataset was recorded in
1980, with
103.2 per 100,000 population. This year marks the minimum incidence rate, providing a baseline for evaluating increases in subsequent years.
Incidence Rate Rebounds in the Late 1980s
After reaching its lowest point in
1980, the incidence rate rebounded in the late 1980s, with
1987 marking a significant increase to
134.0 per 100,000 population. This rebound illustrates the variability in breast cancer incidence rates over time.