Table 10 NPV of earnings of Ph.D. degree at alternative retirement ages.

From: Appraising the lifetime private economic returns of postgraduate degrees: Evidence from Pakistan

Retirement Ages

Earnings

Ph.D. degree from Pakistan

Ph.D. degree from Foreign

55 Years

NPV of Ph.D. earning (NPVphd)

6.1 M

3.58 M

Percentage change in earnings of Ph.D. over non-Ph.D. faculty

44.30%

26%

The net rate of return of a Ph.D. degree over the cost of a Ph.D.

111%

−43%

Percentage change in earnings relative to 60 Years

−2.20%

−3.80%

60 Years

NPV of Ph.D. earning (NPVphd)

6.85 M

4.37 M

Percentage change in earnings of Ph.D. over non-Ph.D. faculty

46.50%

29.80%

The net rate of return of a Ph.D. degree over the cost of a Ph.D.

237%

68.50%

65 Years

NPV of Ph.D. earning (NPVphd)

7.4 M

5.1 M

Percentage change in earnings Ph.D. over non-Ph.D. faculty

47.90%

33%

The net rate of return Ph.D. degree over the cost of a Ph.D.

256.20%

79.90%

Percentage change in earnings relative to 60 Years

1.40%

3.20%

  1. Source: Authors’ Calculations from Survey data (Retirement Age is 55 Years).