A study tracked incidence rates of a blood vessel disorder over time for individuals 50 years and older (see figure below). What is the name for the type of the time trend pattern demonstrated in this chart? (Choose the one best answer) Secular Cyclical Calendar d Influenza Although it looks like incidence of the disease has increased over the past 40+ years, the authors dispel this hypothesis. What might be one explanation for what appears to be higher incidence rates of this disease over time if the incidence rates, in fact, did not increase? The disease is being spread more rapidly due to travel. People are living longer with the disease. cThe population over 50 years has grown in comparison to the under-50 population. d People who contract the disease are now more likely to be diagnosed due to more widespread knowledge of the disease among providers. a Women were more likely to contract the disease than men. b The rates of disease dropped substantially in 1980. c The cyclical nature of the disease indicates that it is infectious. d The prevalence appears to have increased over time.a Secularb Cyclicalc Calendar d Influenza Although it looks like incidence of the disease has increased over the past 40+ years, the authors dispel this hypothesis. What might be one explanation for what appears to be higher incidence rates of this disease over time if the incidence rates, in fact, did not increase?a The disease is being spread more rapidly due to travel.b People are living longer with the disease. cThe population over 50 years has grown in comparison to the under-50 population. d People who contract the disease are now more likely to be diagnosed due to more widespread knowledge of the disease among providers. The authors of this study concluded from the data shown in this figure that this disease is probably infectious. Why did they make this conclusion? a Women were more likely to contract the disease than men. b The rates of disease dropped substantially in 1980. c The cyclical nature of the disease indicates that it is infectious. d The prevalence appears to have increased over time. Solution can you please put the figure so that the questions can be answered..

1. A study tracked incidence rates of a blood vessel disorder over time for individuals 50 years and
older (see figure below).
What is the name for the type of the time trend pattern demonstrated in this chart? (Choose the
one best answer)
Secular
Cyclical
Calendar
d Influenza
Although it looks like incidence of the disease has increased over the past 40+ years, the authors
dispel this hypothesis. What might be one explanation for what appears to be higher incidence
rates of this disease over time if the incidence rates, in fact, did not increase?
The disease is being spread more rapidly due to travel.
People are living longer with the disease.
cThe population over 50 years has grown in comparison to the under-50 population.
d People who contract the disease are now more likely to be diagnosed due to more widespread
knowledge of the disease among providers.
a Women were more likely to contract the disease than men.
b The rates of disease dropped substantially in 1980.
c The cyclical nature of the disease indicates that it is infectious.
d The prevalence appears to have increased over time.a
Secularb
Cyclicalc
Calendar
d Influenza
Although it looks like incidence of the disease has increased over the past 40+ years, the authors
dispel this hypothesis. What might be one explanation for what appears to be higher incidence
rates of this disease over time if the incidence rates, in fact, did not increase?a
The disease is being spread more rapidly due to travel.b
People are living longer with the disease.
cThe population over 50 years has grown in comparison to the under-50 population.
d People who contract the disease are now more likely to be diagnosed due to more widespread
knowledge of the disease among providers. The authors of this study concluded from the data
shown in this figure that this disease is probably infectious. Why did they make this

2. conclusion?
a Women were more likely to contract the disease than men.
b The rates of disease dropped substantially in 1980.
c The cyclical nature of the disease indicates that it is infectious.
d The prevalence appears to have increased over time.
Solution
can you please put the figure so that the questions can be answered.