Mortality Query Module Configuration Selection

When To Use Comparability-Adjusted Modules

Only use the comparability-adjusted mortality module when you need both years before and after 1999. In the comparability module the years prior to 1999 are comparability modified so if the years you are looking at are only before 1999 then you should use the 1998 and earlier ICD-9 module to obtain the most useful data.

Comparability Ratios

A comparability ratio measures the level of agreement between ICD-9 and ICD-10 classification systems. NCHS provides "comparability ratios" for 113 selected causes of death by a double-coding exercise using 1996 death data. NCHS coded 1.8 million death certifications from 1996 first using ICD-9 and then using ICD-10. Based on that double-coding, NCHS has produced the set of Comparability Ratios for 113 Selected Causes of Death. Each ratio is an expression of the results of the comparison as a ratio of death for a cause of death by the later revision divided by the number of cause of death coded and classified by the earlier revision. To accurately portray trends that include both years 1980-1998 and 1999 on, the death counts or rates for the earlier years must be "comparability modified." This is accomplished by multiplying the earlier death count (or rate) by the comparability ratio for that cause of death.

When To Use Comparability-Adjusted Modules

Only use the comparability-adjusted mortality module when you need both years before and after 1999. In the comparability module the years prior to 1999 are comparability modified so if the years you are looking at are only before 1999 then you should use the 1998 and earlier ICD-9 module to obtain the most useful data.

Comparability Ratios

A comparability ratio measures the level of agreement between ICD-9 and ICD-10 classification systems. NCHS provides "comparability ratios" for 113 selected causes of death by a double-coding exercise using 1996 death data. NCHS coded 1.8 million death certifications from 1996 first using ICD-9 and then using ICD-10. Based on that double-coding, NCHS has produced the set of Comparability Ratios for 113 Selected Causes of Death. Each ratio is an expression of the results of the comparison as a ratio of death for a cause of death by the later revision divided by the number of cause of death coded and classified by the earlier revision. To accurately portray trends that include both years 1980-1998 and 1999 on, the death counts or rates for the earlier years must be "comparability modified." This is accomplished by multiplying the earlier death count (or rate) by the comparability ratio for that cause of death.

Count

This module returns the number of deaths.

Crude Rate

A crude rate is a fraction, in which the numerator is the number of people in whom an event occurred during a certain period of time, and the denominator is the total number of people in the population at risk for the same period of time.

Leading Causes of Death by Count

This module calculates the number of deaths for the NCHS 50 leading causes of death, and returns the number of deaths for the leading causes.

You can filter the data by year, age, sex, and geographic area. There are no grouping variables available for this selection.

Crude Rate

A crude rate is a fraction, in which the numerator is the number of people in whom an event occurred during a certain period of time, and the denominator is the total number of people in the population at risk for the same period of time.

Leading Causes of Death by Age-Adjusted Rate

This module calculates age-adjusted death rates (number of deaths per 100,000, age-standardized to the U.S. 2000 population) for the NCHS 50 leading causes of death, and returns the age-adjusted death rates for the leading causes.

You can filter the data by year, age, sex, and geographic area. There are no grouping variables available for this selection.

Average Age at Time of Death

This module returns the average age at death. You can filter or group the data by cause of death, year, age, sex, and geographic area.

Count

This module returns the number of deaths.

Leading Causes of Death by Count

This module calculates the number of deaths for the NCHS 50 leading causes of death, and returns the number of deaths for the leading causes.

You can filter the data by year, age, sex, and geographic area. There are no grouping variables available for this selection.

Leading Causes of Death by Crude Rate

This module calculates death rates (number of deaths per 100,000) for the NCHS 50 leading causes of death, and returns the death rates for the leading causes.

You can filter the data by year, age, sex, and geographic area.

There are no grouping variables available for this selection.

Leading Causes of Death by Age-Adjusted Rate

This module calculates age-adjusted death rates (number of deaths per 100,000, age-standardized to the U.S. 2000 population) for the NCHS 50 leading causes of death, and returns the age-adjusted death rates for the leading causes.

You can filter the data by year, age, sex, and geographic area. There are no grouping variables available for this selection.

Average Age at Time of Death

This module returns the average age at death. You can filter or group the data by cause of death, year, age, sex, and geographic area.

Count

This module returns the number of deaths.

Leading Causes of Death by Count

This module calculates the number of deaths for the NCHS 50 leading causes of death, and returns the number of deaths for the leading causes.

You can filter the data by year, age, sex, and geographic area. There are no grouping variables available for this selection.

Leading Causes of Death by Crude Rate

This module calculates death rates (number of deaths per 100,000) for the NCHS 50 leading causes of death, and returns the death rates for the leading causes.

You can filter the data by year, age, sex, and geographic area.

There are no grouping variables available for this selection.

Leading Causes of Death by Age-Adjusted Rate

This module calculates age-adjusted death rates (number of deaths per 100,000, age-standardized to the U.S. 2000 population) for the NCHS 50 leading causes of death, and returns the age-adjusted death rates for the leading causes.

You can filter the data by year, age, sex, and geographic area. There are no grouping variables available for this selection.

Average Age at Time of Death

This module returns the average age at death. You can filter or group the data by cause of death, year, age, sex, and geographic area.

Count

This module returns the number of deaths.

Leading Causes of Death by Count

This module calculates the number of deaths for the NCHS 50 leading causes of death, and returns the number of deaths for the leading causes.

You can filter the data by year, age, sex, and geographic area. There are no grouping variables available for this selection.

Count

This module returns the number of deaths.

Crude Rate

A crude rate is a fraction, in which the numerator is the number of people in whom an event occurred during a certain period of time, and the denominator is the total number of people in the population at risk for the same period of time.

Leading Causes of Death by Count

This module calculates the number of deaths for the NCHS 50 leading causes of death, and returns the number of deaths for the leading causes.

You can filter the data by year, age, sex, and geographic area. There are no grouping variables available for this selection.

Leading Causes of Death by Crude Rate

This module calculates death rates (number of deaths per 100,000) for the NCHS 50 leading causes of death, and returns the death rates for the leading causes.

You can filter the data by year, age, sex, and geographic area.

There are no grouping variables available for this selection.

Leading Causes of Death by Age-Adjusted Rate

This module calculates age-adjusted death rates (number of deaths per 100,000, age-standardized to the U.S. 2000 population) for the NCHS 50 leading causes of death, and returns the age-adjusted death rates for the leading causes.

You can filter the data by year, age, sex, and geographic area. There are no grouping variables available for this selection.

Average Age at Time of Death

This module returns the average age at death. You can filter or group the data by cause of death, year, age, sex, and geographic area.

When To Use Comparability-Adjusted Modules

Only use the comparability-adjusted mortality module when you need both years before and after 1999. In the comparability module the years prior to 1999 are comparability modified so if the years you are looking at are only before 1999 then you should use the 1998 and earlier ICD-9 module to obtain the most useful data.

Comparability Ratios

A comparability ratio measures the level of agreement between ICD-9 and ICD-10 classification systems. NCHS provides "comparability ratios" for 113 selected causes of death by a double-coding exercise using 1996 death data. NCHS coded 1.8 million death certifications from 1996 first using ICD-9 and then using ICD-10. Based on that double-coding, NCHS has produced the set of Comparability Ratios for 113 Selected Causes of Death. Each ratio is an expression of the results of the comparison as a ratio of death for a cause of death by the later revision divided by the number of cause of death coded and classified by the earlier revision. To accurately portray trends that include both years 1980-1998 and 1999 on, the death counts or rates for the earlier years must be "comparability modified." This is accomplished by multiplying the earlier death count (or rate) by the comparability ratio for that cause of death.