SAS Output

Subsample (N=50) of data on Blood Lead Levels from the Placebo Group

Treatment of Lead Exposed Children (TLC) Trial

The CORR Procedure

4 Variables:	lead0 lead1 lead4 lead6

Covariance Matrix, DF = 49
	lead0	lead1	lead4	lead6
lead0	25.24164898	22.74946939	24.26097959	21.41784490
lead1	22.74946939	29.82448980	27.04122449	23.38412245
lead4	24.26097959	27.04122449	33.09846939	28.21895918
lead6	21.41784490	23.38412245	28.21895918	31.80743265

Simple Statistics
Variable	N	Mean	Std Dev	Sum	Minimum	Maximum
lead0	50	26.27200	5.02411	1314	19.70000	38.10000
lead1	50	24.66000	5.46118	1233	14.90000	40.80000
lead4	50	24.07000	5.75313	1204	15.30000	38.60000
lead6	50	23.64600	5.63981	1182	13.50000	43.30000

lead0

1.00000

0.82914

<.0001

0.83935

<.0001

0.75588

<.0001

lead1

0.82914

<.0001

1.00000

0.86067

<.0001

0.75922

<.0001

lead4

0.83935

<.0001

0.86067

<.0001

1.00000

0.86971

<.0001

lead6

0.75588

<.0001

0.75922

<.0001

0.86971

<.0001

1.00000

Subsample (N=50) of data on Blood Lead Levels from the Succimer Group

Treatment of Lead Exposed Children (TLC) Trial

The CORR Procedure

4 Variables:	lead0 lead1 lead4 lead6

Covariance Matrix, DF = 49
	lead0	lead1	lead4	lead6
lead0	25.20979592	15.46542857	15.13800000	22.98542857
lead1	15.46542857	58.86705714	44.02907347	35.96595510
lead4	15.13800000	44.02907347	61.65714694	33.02197143
lead6	22.98542857	35.96595510	33.02197143	85.49464898

Simple Statistics
Variable	N	Mean	Std Dev	Sum	Minimum	Maximum
lead0	50	26.54000	5.02094	1327	19.70000	41.10000
lead1	50	13.52200	7.67249	676.10000	2.80000	39.00000
lead4	50	15.51400	7.85221	775.70000	3.00000	40.40000
lead6	50	20.76200	9.24633	1038	4.10000	63.90000

lead0

1.00000

0.40146

0.0039

0.38397

0.0059

0.49511

0.0003

lead1

0.40146

0.0039

1.00000

0.73082

<.0001

0.50697

0.0002

lead4

0.38397

0.0059

0.73082

<.0001

1.00000

0.45482

0.0009

lead6

0.49511

0.0003

0.50697

0.0002

0.45482

0.0009

1.00000