Maximum likelihood estimation of a binomial proportion using one‐sample misclassified binary data

In this article, we construct two likelihood‐based confidence intervals (CIs) for a binomial proportion parameter using a double‐sampling scheme with misclassified binary data. We utilize an easy‐to‐implement closed‐form algorithm to obtain maximum likelihood estimators of the model parameters by maximizing the full‐likelihood function. The two CIs are a naïve Wald interval and a modified Wald interval. Using simulations, we assess and compare the coverage probabilities and average widths of our two CIs. Finally, we conclude that the modified Wald interval, unlike the naïve Wald interval, produces close‐to‐nominal CIs under various simulations and, thus, is preferred in practice. Utilizing the expressions derived, we also illustrate our two CIs for a binomial proportion parameter using real‐data example.     

Survey of Recent Developments

As Indonesia heads to the polls in 2014, its economy is slowing. The end of the commodities boom and the global return to more normal monetary policy has exposed some weaknesses. Exchange-rate depreciation has absorbed some of the adjustment; but structural rigidities are still likely to limit the expansion of non-commodity sectors, and the increased fuel-subsidy bill for imported oil is putting pressure on the current account and the budget. The immediate focus is on demand-side consolidation to manage inflation and the currentaccount deficit.

For an economy like Indonesia’s to be overheating, and for monetary and fiscal authorities to be engineering a soft landing, when growth is below 6%, points to major structural problems. If Indonesia is to prevent the current rate of growth from becoming the new normal, there will need to be a substantial supply-side response to lift productivity, as well as a restructuring of the economy and the introduction of policies that make the economy more flexible in adjusting to shocks. The current economic slowdown has yet to trigger sweeping reforms; policy coordination remains problematic as Indonesia enters a big political year.

Compared with its neighbours, Indonesia is largely on the outside of the regional production networks, and its manufacturing sector does not play into factory Asia. Now, faced with lower commodity prices globally—and growth in non-resource sectors is critical— the lack of a large manufacturing base appears to be a weakness. Indonesia is attracting more foreign direct investment than ever and is climbing the global rankings of preferred economies in which to invest, but this is occurring without improvements to its investment environment or competitiveness. Indonesia can participate more fully in global supply chains and increase its potential for growth by upgrading its infrastructure, improving its investment environment, and using regional initiatives strategically to make strong commitments that reinforce its priorities for domestic reform.

In its hosting of APEC in 2013, Indonesia championed infrastructure investment where the lack of structural reform and macroeconomic constraints are inhibiting much-needed expansion, both in Indonesia and in the region. The positive outcome, albeit only a small step forward for the Doha Round, at the WTO Ministerial Conference in Bali, in December, also builds momentum for better regional and global cooperation. The priority now is for Indonesia to commit to, and show leadership in, the Regional Comprehensive Economic Partnership (RCEP) and the implementation of the ASEAN Economic Community.     

Effective rates of protection revisited for Indonesia

This paper calculates nominal and effective rates of protection for Indonesian tradables sectors in early 2008, and compares these figures with previous calculations for 1987 and 1995. Such a review is overdue. Many non-tariff barriers to imports and exports have been abolished, though new import restraints on rice and sugar are notable exceptions to this trend. Import tariffs have been lowered, particularly through regional preferential trade arrangements. We account for such arrangements in two different ways. Export taxes persist in certain natural resources sectors, but most rates have been reduced. We find that more than half of the effective support provided to tradable products sectors now comes from subsidies on fuels, fertiliser, electricity and liquefied petroleum gas, rather than from trade policies per se. Duty drawbacks and exemptions for exporters boost the effective rate of protection for tradables sectors overall by a small fraction of 1%, and for no input–output sector by more than 3%.     

FIFTY YEARS OF TRADE POLICY IN INDONESIA: NEW WORLD TRADE,OLD TREATMENTS

Indonesia's trade policy has evolved over the last 50 years. It has been influenced by the country's level of development and the conflict between openness and protectionism; external developments, such as commodity booms and busts and increased competition; and international commitments, whether multilateral or regional. As a result, trade policy has often been ambivalent and ineffective. Given that Indonesia has undergone various transformations and that the world is a different place from what it was in 1965, the country needs to take a more pragmatic and forward-looking stance. Trade policy needs to be part of a comprehensive strategy to improve competitiveness and diversify exports. If Indonesia is to be part of the new paradigm, where the production of goods and services is based on production networks and global value chains, its policy focus will need to shift from protecting and favouring sectors to promoting trade and industrial policies that encourage the flow of goods, services, and people.     

Employee cost-sharing and the welfare effects of flexible spending accounts

Flexible Spending Accounts (FSAs) subsidize out-of-pocket health expenses not covered by employer-provided health insurance, making health care cheaper ex post, but also reducing the incentive to insure. We use a cross section of firm-level data to show that FSAs are indeed associated with reduced insurance coverage, and to evaluate the welfare consequences of this shift. Correcting for selection effects we find that FSAs are associated with insurance contracts that have coinsurance rates about 7 percentage points higher, relative to a sample average coinsurance rate of 17%. Meanwhile, coinsurance rates net of the subsidy are approximately unchanged, providing evidence that FSAs are only welfare neutral if we ignore distributional considerations and the deadweight loss of the taxes necessary to finance the subsidy. These results also suggest that FSAs may explain a significant fraction of the shift in health care costs to employees that has occurred in recent years.