Details on Person Weights Construction. The person-level weight WTDPER98 was developed in three stages. A person level weight for Panel 3 was created, including both an adjustment for nonresponse over time and poststratification, controlling to Current Population Survey (CPS) population estimates based on five variables. Variables used in the establishment of person-level poststratification control figures included: census region (Northeast, Midwest, South, West); MSA status (MSA, non-MSA); race/ethnicity (Hispanic, black but non-Hispanic, and other); sex; and age. Then a person level weight for Panel 2 was created, again including an adjustment for nonresponse over time and poststratification, again controlling to CPS population estimates based on the same five variables. When poverty status information derived from income variables became available, a 1998 composite weight was formed from the Panel 2 and Panel 3 weights by multiplying the Panel weights by .5. Then a final poststratification was done on this composite weight variable, including poverty status (below poverty, from 100 to 125 percent of poverty, from 125 to 200 percent of poverty, from 200 to 400 percent of poverty, at least 400 percent of poverty) as well as the original five poststratification variables in the establishment of control totals.
Details on Person Weights Construction. The person-level weight WTDPER96 was developed using the MEPS Round 1 person-level weight as a base weight (for key, in-scope respondents who joined an RU after Round 1, the Round 1 RU weight served as a base weight). The weighting process included an adjustment for nonresponse over Round 2 and the 1996 portion of Round 3, as well as poststratification to population control figures for December 1996 (these figures were derived by scaling the population totals obtained from the March 1997 Current Population Survey (CPS) to reflect the Census Bureau estimated population distribution across age and sex categories as of December, 1996). Variables used in the establishment of person-level poststratification control figures included: poverty status (below poverty, from 100 to 125 percent of poverty, from 125 to 200 percent of poverty, from 200 to 400 percent of poverty, at least 400 percent of poverty); census region (Northeast, Midwest, South, West); MSA status (MSA, non-MSA); race/ethnicity (Hispanic, black but non-Hispanic, and other); sex; and age. Overall, the weighted population estimate for the civilian non-institutionalized population for December 31, 1996 is 265,439,511 persons. The inclusion of key, in-scope persons who were not in-scope on December 31,1996 brings the estimated total number of persons represented by the MEPS respondents over the course of the year up to 268,905,490 (WTDPER96 > 0). The weighting process included poststratification to population totals obtained from the 1996 Medicare Current Beneficiary Survey (MCBS) for the number of deaths among Medicare beneficiaries in 1996, and poststratification to population totals obtained from the 1996 MEPS Nursing Home Component for the number of individuals admitted to nursing homes. The MEPS Round 1 weights incorporated the following components: the original household probability of selection for the NHIS; ratio-adjustment to NHIS national population estimates at the household (occupied dwelling unit) level; adjustment for nonresponse at the dwelling unit level for Round 1; and poststratification to figures at the family- and person-level obtained from the March 1996 CPS database.
Details on Person Weights Construction. The person-level weight PERWT00F was developed in several stages. Person level weights for Panels 4 and 5 were created separately. The weighting process for each panel included an adjustment for nonresponse over time and poststratification. Poststratification was achieved by controlling to Current Population Survey (CPS) population estimates based on five variables. Variables used in the establishment of person-level poststratification control figures included: census region (Northeast, Midwest, South, West); MSA status (MSA, non-MSA); race/ethnicity (Hispanic, black but non-Hispanic, and other); sex; and age. A 2000 composite weight was then formed by multiplying each panel weight by .5 and then poststratifying the resulting weight to the same set of CPS-based control totals. When poverty status information derived from income variables became available, a final poststratification was done on the resulting weight variable, including poverty status (below poverty, from 100 to 125 percent of poverty, from 125 to 200 percent of poverty, from 200 to 400 percent of poverty, at least 400 percent of poverty) as well as the original five poststratification variables in the establishment of control totals.
Details on Person Weights Construction. The person-level weight PERWT00F was developed in three stages. A person-level weight for Panel 5 was created, including both an adjustment for nonresponse over time and poststratification, controlling to Current Population Survey (CPS) population estimates based on six different variables. Then a person-level weight for Panel 4 was created, again including an adjustment for nonresponse over time and poststratification, controlling to CPS population estimates based on the same six variables. A composite weight was formed from the Panel 4 and Panel 5 weights by multiplying the Panel weights by factors corresponding to the relative sample size of the two panels. Then a final poststratification was done on this composite weight variable, again based on the same poststratification variables used previously. The person-level weight for MEPS Panel 4 was developed using the 1999 full year weight for an individual as a “base” weight for survey participants present in 1999. For key, inscope respondents who joined an RU some time in 2000 after being out-of-scope in 1999, the “base” weight was taken to be the 1999 family weight associated with the family the person joined. The weighting process included an adjustment for nonresponse over Rounds 4 and 5 as well as poststratification to population control totals for December, 2000 for key, responding persons inscope on December 31, 2000. These control totals were derived by scaling back the population distribution obtained from the March 2001 CPS to reflect the December, 2000 estimated population distribution, employing age and sex data available from the December, 2000 CPS. Variables used in the establishment of person-level poststratification control figures included: poverty status, census region (Northeast, Midwest, South, West); MSA status (MSA, non-MSA); race/ethnicity (Hispanic, black but non-Hispanic, and other); sex, and age. Xxx responding persons not inscope on December 31, 2000 but inscope earlier in the year retained, as their final Panel 4 weight, the weight after the nonresponse adjustment. The person-level weight for MEPS Panel 5 was developed using the MEPS Round 1 person-level weight as a “base” weight. For key, inscope respondents who joined an RU after Round 1, the Round 1 family weight served as a “base” weight. The weighting process included an adjustment for nonresponse over the remaining data collection rounds in 2000 as well as poststratification to the same population control figures for Decem...
Details on Person Weights Construction. The person-level weight WTDPER97 was developed in three stages. A person level weight for panel 2 was created, including both an adjustment for nonresponse over time and poststratification, controlling to Current Population Survey (CPS) population estimates based on five variables. Variables used in the establishment of person-level poststratification control figures included: census region (Northeast, Midwest, South, West); MSA status (MSA, non-MSA); race/ethnicity (Hispanic, black but non-Hispanic, and other); sex; and age. Then a person level weight for Panel 1 was created, again including an adjustment for nonresponse over time and poststratification, again controlling to CPS population estimates based on the same five variables. When poverty status information derived from income variables became available, a 1997 composite weight was formed from the panel 1 and panel 2 weights by multiplying the Panel weights by .5. The panel specific weights described below in sections 3.2.1 and 3.2.2 are not available on the current file. This additional information is provided for your reference only. In order to determine which panel a sampled person was in, users must link to the 1997 Full Year Population Characteristics file to obtain the variable PANEL97.
