Overview of Basic Demo Concepts_RPO3_Population Officers PDF

REFRESHER and DEEPENING COURSE ON BASIC DEMOGRAPHY and SITUATIONAL ANALYSIS AMONG TECHNICAL STAFF OF CENTRAL LUZON POPULATION OFFICES MARILYN F. OGAYA Assistant Regional Director-POPCOM IV Grace Crown Hotel, Angeles City/November 7- 9, 2018 OVERVIEW OF...

REFRESHER and DEEPENING COURSE ON BASIC DEMOGRAPHY and SITUATIONAL ANALYSIS AMONG TECHNICAL STAFF OF CENTRAL LUZON POPULATION OFFICES MARILYN F. OGAYA Assistant Regional Director-POPCOM IV Grace Crown Hotel, Angeles City/November 7- 9, 2018 OVERVIEW OF DEMOGRAPHIC CONCEPTS and SOURCES OF DEMOGRAPHIC DATA  Importance of Understanding Demographic or Population Concepts  Demography is the study of human population  It presents population data into a systematic manner  Demography and population is inherently connected with various disciplines or development concerns  It is fundamental in designing and implementing population management program and other  Sources of Population Data Population Data is mainly obtained thru the following sources: 1. Census 2. Vital Registration System 3. Sample Surveys 4. Administrative Records  Sources of Population Data Sources of Population Census Data  This is a complete enumeration or count of population residing in a particular area  It is conducted by the Philippine Statistics Authority (PSA) formerly NSO for a particular appointed time in desired intervals (usually 5 or 10 year intervals)  The latest census was conducted in August 1, 2015.  Sources of Population Data Vital Registration System  The PSA through the Local Civil Registrars (LCRs) gathers information on VITAL EVENTS such as:  Births  Deaths  Marriages Including dissolution of marriages  Sources of Population Data Sample Surveys  Uses sample of the target population to produce estimates  May be conducted for the national of sub- national scale  Sample of surveys: National Demographic and Health Surveys (NDHS) Labor Force Survey (LFS) Family Income and Expenditure Survey (FIES)  Sources of Population Data Administrative Records  Information is based on the operations of particular agencies  Education data (from DepEd)  Voters’ List (COMELEC)  Health indicators (DoH)  OFW profiles (CFO, POEA, OWWA) Population Processes and Outcomes Population Population Population Outcomes Processes Population size Processes Fertility Population Mortality composition by Migration age and sex Population distribution (spatial) Population Size  The total number of population of a particular geographic or administrative area  Include ALL PERSONS living in private households and those living in institutional quarters like prisons, dormitories, hotels, hospitals, and those in embassies, consulates, and missions abroad  Land-based Overseas Filipino Workers (OFWs) are included in the total count as long as they intend to return in a particular period (usually 5 years)  Seafarers are included in the population count Population Size Filipinos continues to grow in numbers 101,981,437 (2015) Source: PSA (2010 CPH and Population Projections, Medium Assumptions) Population Composition How can the population be described? – By age – By sex – Education – Economic status – Cultural – Etc. Population Distribution  The pattern of settlement and dispersal of population within a country or subnational area Population Processes These are events that define the changes and characteristics of population –FERTILITY –MORTALITY –MIGRATION Fertility  The capacity of a woman or a couple to produce children, measured in terms of the number of live births  It increases the Mortality  The complete absence or cessation of life  Expressed through number of deaths  It decrease Migration  The movement of an individual that involves crossing a territorial boundary for purposes of establishing residence  It can be an internal (within the country) or international (across national borders)  In increases of Demographic Measures  Deriving measures in demography involves two ways: 1. Relating the occurrence of an event to the population exposed to the risk of the event (RATE) 2. Relating one quantity with another quantity (RATIO) A B A B C Demographic Measures RATE  Measure the likelihood of the occurrence of an event among population within a specific period  Sample: Crude Death Rate – number of deaths (event) over mid-year population (population exposed to the event) Demographic Measures TYPES OF RATE 1. Crude rate – the rate computed for the entire population of a specified area regardless of exposure to the risk of the event. The entire population is used as the denominator. Sample:  Crude Birth Rate – number of births (event) over mid-year population – Men and those not in reproductive age are included in the denominator Demographic Measures TYPES OF RATE 2. Specific Rate– the rate computed for a disaggregated population on the basis of a selected characteristics. It uses only the population exposed to the risk of the event in the denominator. Sample: Age specific fertility rate– number of births to women aged 15-19 Demographic Measures RATIO  When one wishes to relate one number to another number (into a single number) Sample: 1. Sex Ratio – number of males for every 100 females 2. Young Age Dependency Ratio – number of population aged below 15 for every 100 population in the working age (15-64 years old)  A constant (k) is usually used to express the number more easily and with relevance Demographic Measures PROPORTION  Used to describe the relationship of one sub-group to a larger group which include the sub-group itself  Dividing the subgroup with the total population results to proportion Sample: Proportion unemployed – number of unemployed divided by number of population in the labor force Demographic Measures PERCENTAGE  A proportion expressed as units per 100; or a proportion multiplied by 100 Sample: Percentage of unemployed– number of unemployed divided by number of population in the labor force multiplied by 100 Demographic Measures COHORT  Is a group of people sharing a common demographic experience and this group may be observed through time Sample: People born in the Philippines in the year 1995. Here, the common experience is “being born at the same year.” Mid-year Population  Usually the estimated population as of July 1 of the year for which the rate is being computed  It is an approximation of the actual “population that is exposed to the risk” of a particular event whenever this value is not readily available  This value may be calculated for the total population or according to specific characteristics of interest Constant  It is a given number usually expressed as “k” in the formula  It is used to make the measure more understandable or meaningful For example, in 1995, 0.0063 deaths per person occurred in the Philippines. Multiplying this rate by a constant (1,000) will help express the statement in a clearer, more understandable manner. Thus, in 1995, there were 6.3 deaths per 1,000 population. Calculating the Mid-year Population Pmidyear = P1 + n/N x (P2- P1) where: P1 = total population as of earlier census P2 = total population in a latter census n = number of months between P1, and desired midyear population estimate N = total number of months elapsed between the two censuses TIME TO DO SOME EXERCISE THANK YOU