Final answer:
The question requires an understanding of data collection methods relevant to public health, specifically the calculation of inpatient service days and mortality rates within a population. Accurate medical records and a summation of hospital stays for inpatients are crucial for calculating inpatient service days, while mortality rates require data on the number of deaths against the population size.
Step-by-step explanation:
The question pertains to the collection of census data and the calculation of inpatient service days, which is likely an inquiry related to the field of health informatics or public health. Before beginning the actual calculation of this data, it is essential to collect accurate medical records and history of hospital stays for inpatient individuals. After compiling this information, one can calculate the inpatient service days by summing up the total number of days each patient spent in the hospital over a specified time period.
To calculate mortality rates within a population, a researcher should gather data on the number of deaths within that population over a specific time frame and set this against the total population or specific demographics within the population. This might include collecting information from death certificates, medical records, and other health data repositories. Additionally, surveys, interviews, and direct observation can also be effective methods for collecting relevant mortality data.