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Table 3 Birth weight, peak alkaline phosphatase activity (P-APA), and serum phosphorus of the 32 individuals radiographically evaluated for rickets.

From: High frequencies of elevated alkaline phosphatase activity and rickets exist in extremely low birth weight infants despite current nutritional support

Birth Weight (g)

P-APA (IU/L)

Serum Phosphorus (mg/dL)

Rickets diagnosed

437

801

5.7

Yes

460

1329

5.2

Yes

480

1013

7.4

Yes

492

474

5.3

Yes

503

799

5.7

Yes

540

760

4.9

Yes

550

1462

5.5

Yes

550

1426

3.7

No

554

1873

-

Yes

580

1334

4.6

Yes

590

839

4.3

No

590

908

4.9

Yes

611

836

4.6

No

660

1141

3.7

Yes

660

1902

6.7

No

660

1029

5.8

No

695

743

4.4

No

697

859

4

Yes

708

933

4.3

No

720

489

6.7

No

720

712

5.2

No

735

1001

6

No

740

834

6.6

No

740

1101

4.4

Yes

760

728

5.1

No

793

1083

5.3

Yes

795

863

5

Yes

795

1718

5.3

Yes

858

781

3.7

Yes

869

816

5.4

No

915

915

5.3

No

995

1107

5.6

Yes