Fourth quarter net income excluding restructuring, asset impairments and acquisition related integration costs ("Adjusted Net Income"), totaled $287 million, or $0.90 per diluted share, which includes the favorable impacts of a lower effective tax rate and share repurchases, partially offset by increased expense resulting from the variable accounting related to the Company's 2010 Long-Term Incentive Plan. Adjusted Net Income in the prior year period was $299 million, or $0.91 per diluted share.
Fourth quarter earnings before depreciation and amortization, interest expense, other income (expense), income tax expense, equity income, restructuring and acquisition integration costs (“Adjusted EBITDA”) was $486 million, compared to $541 million in the prior year period. Adjusted EBITDA margin was 12.9% in the fourth quarter of 2012, compared with 13.9% in the prior year period. The reduction in Adjusted EBITDA reflects continuing volume reductions in Europe, unfavorable impacts of currency exchange, and $11 million of increased expense resulting from the variable accounting impacts related to the Company's 2010 Long-Term Incentive Plan. Excluding the variable impacts of the 2010 Long-Term Incentive Plan, Adjusted EBITDA margin for the fourth quarter of 2012 was 13.2%.
Interest expense for the fourth quarter totaled $36 million, comparable to $39 million in the prior year period.
A tax benefit of $15 million was recognized in the fourth quarter of 2012, compared to a tax expense of $29 million in the prior year period. The 2012 period reflects lower pretax earnings, the geographic mix of pretax earnings, and the recognition of tax planning initiatives and discrete tax items.Full Year 2012 Results The Company reported 2012 revenue of $15.5 billion, essentially flat compared to 2011, adjusting for currency exchange, commodity movements, acquisitions and divestitures, and reflects growth of 11% in Asia and 6% in North America, partially offset by a 6% decline in Europe and South America, respectively.