WGTTEST: Stata module to test the impact of sampling weights in regression analysis

wgttest performs a test proposed by DuMouchel and Duncan (1983) to evaluate whether the weighted and unweighted estimates of a regression model are significantly different.

Organic d13C values, kerogen atomic C/N ratios and relative weights of some kerogen pyrolysis products of ODP Hole 112-682A (Table 1)

Carbon isotopic composition of predominantly marine kerogen in latest Oligocene mudstones of the Peru Margin ODP 682A Hole shows an about 3.5? increase with decreasing age. Py-GC and elemental (C=N ratio) analysis of the kerogen plus sulphur isotopic study together with earlier knowledge on geological setting and organic geochemistry results in a better understanding of depositionary environment and allows to separation of the influence of concentration of water dissolved carbon dioxide (ce) on kerogen delta13C from that of other factors (bacterial degradation, sea surface temperature, DIC delta13C, productivity, and admixture of land plant OM). Based on this analysis, the major part of the kerogen shift is considered as a result of the latest Oligocene decrease of marine photosynthetic carbon isotopic fractionation in the Peru Margin photic zone, which in turn possibly reflects a simultaneous drop in atmospheric CO2 level. Uncertainties in the evaluation of the factors affecting the marine photosynthetic carbon isotopic fractionation and the extent of ocean-atmosphere disequilibrium do not permit calculation of the decrease of the atmospheric CO2.

Discrimination against minorities and women in pensions and health, life, and disability insurance.

Includes bibliographical references.

Medical Advisory Committee report and recommendations on the administration of the OASI disability freeze provision : preservation of rights of individuals with extended total disability, Social security amendments of l954.

"July 1955."

California disability insurance program.

Mode of access: Internet.

Selected data on initial operations under the disability freeze provision of the Social Security Amendments of 1954.

Mode of access: Internet.

Social Security Act amendments of 1949 : hearings before the Committee on Ways and Means, House of Representatives, Eighty-first Congress, first session, on H.R. 2892, a bill to amend the Social Security Act to enable states to establish more adequate public-welfare programs, and for other purposes, and other bills [and] H.R. 2893, a bill to extend and improve the old-age and survivors insurance system, to add protection against disability, and for other purposes, and other bills.

Considers legislation to extend and improve the Old-Age and Survivors Insurance system, and to add disability protection. Includes H. Rpt. 80-2168, "Social Security Act Amendments, 1948," on H.R. 6777, June 2, 1948 (p. 1096-1158), pt.2.

Temporary disability insurance; problems in formulating a program administered by a state employment security agency. Rev. ed. 1949. [Prepared by the Division of Research and Statistics and the Bureau of Employment Security of the Social Security Administration].

"Appendix C. Selected references on temporary disability insurance program": pages 63-67.

Manual of state employment security legislation. Supplement: Draft language with commentary for a state temporary disability insurance law coordinated with unemployment insurance.

Mode of access: Internet.

New Jersey disability insurance program.

"October 1950."

State estimates of disability and utilization of medical services, United States, 1969-71 : derived from the Health Interview Survey.

Issued Jan. 1977.

Conversion factors and weights and measures for agricultural commodities and their products /

Section B prepared by War Food Administration, Food Distribution Administration.

Agent Orange legislation and oversight [microform] : hearing before the Committee on Veterans' Affairs, United States Senate, One Hundredth Congress, second session, on S. 1692, the proposed "Agent Orange Disability Benefits Act of 1987"; S. 1787, the proposed "Veterans' Agent Orange Disabilities Act of 1987"; and Agent Orange oversight issues, May 12, 1988.

CIS Microfiche Accession Numbers: CIS 89 S761-8

Allegations of bias within the social security disability program : hearing before the Subcommittee on Oversight of Government Management of the Committee on Governmental Affairs, United States Senate, One Hundred Second Congress, second session, September 22, 1992.

Shipping list no.: 93-0203-P.