What is the difference between effectiveness and efficacy in determining the benefit of therapy 'A' on condition 'B'? The context of this question is within a health framework i.e. looking at one or more therapies in the treatment of a condition. It appears that even well respected researchers confuse the terms efficacy and effectiveness, using the terms interchangeably.
Wage earners cannot deduct Social Security and Medicare taxes. Self-Employment Tax Rate. The 2010 Tax Relief Act reduced the self-employment tax by 2% for self-employment income earned in calendar year 2011. The self-employment tax rate for self-employment income earned in calendar year 2011 was 13.3% (10.4% for Social Security and 2.9% for Medicare). The Temporary Payroll Tax Cut Continuation Act of 2011 extended the self-employment tax reduction of 2% for calendar year 2012 so the rates for 2011 remained in effect for 2012.
1 If you are self-employed you generally have to pay self-employment tax as well as income tax. 2  Self-employment tax is a Social Security and Medicare tax primarily for individuals who work for themselves.3  It is similar to the Social Security and Medicare taxes withheld from the pay of most wage earners. You figure self-employment tax using a Form 1040 Schedule SE. 2  Also, you can deduct an employer's equivalent portion of your self-employment tax in figuring your adjusted gross income. 3  In prior years, the deduction was equal to one-half of self-employment tax.