The following table sets forth the computation of basic and diluted earnings per share for the periods indicated (in thousands, except per share data):


	Three months ended June 30,						Six months ended June 30,
	(amounts in thousands)
	2012			2011			2012			2011
Basic and Diluted:
Net income attributable to UHS	$	107,561		$	103,649		$	236,168		$	217,842
Less: Net income attributable to unvested restricted share grants		(126	)		(126	)		(294	)		(275	)

Net income attributable to UHS—basic and diluted	$	107,435		$	103,523		$	235,874		$	217,567

Weighted average number of common shares—basic		96,691			97,563			96,642			97,472
Net effect of dilutive stock options and grants based on the treasury stock method		1,038			1,695			1,118			1,591

Weighted average number of common shares and equivalents—diluted		97,729			99,258			97,760			99,063

Earnings per basic share attributable to UHS:	$	1.11		$	1.06		$	2.44		$	2.23

Earnings per diluted share attributable to UHS:	$	1.10		$	1.04		$	2.41		$	2.20