Diversified Healthcare Trust (DHC) 10-Q/A 2006 Q1 Quarterly report (amended)

Exhibit 12.1

SENIOR HOUSING PROPERTIES TRUST

Computation of Ratio of Earnings to Fixed Charges

(dollars in thousands)

	Three Months Ended March 31,						Year Ended December 31,
	2006			2005			2005			2004			2003			2002			2001
	(Restated)						(Restated)
Earnings:
Net income	$	10,460		$	13,865		$	63,912		$	56,742		$	45,874		$	50,184		$	17,018
Fixed charges	11,371			11,223			46,633			41,836			37,899			30,210			7,334
Adjusted earnings	$	21,831		$	25,088		$	110,545		$	98,578		$	83,773		$	80,394		$	24,352
Fixed charges:
Interest expense	$	11,371		$	11,223		$	46,633		$	41,836		$	37,899		$	30,210		$	7,334
Ratio of earnings to fixed charges	1.9		x	2.2		x	2.4		x	2.4		x	2.2		x	2.7		x	3.3		x