Bone mineral content (BMC) (mg) and bone mineral density (BMD) (mg/cm2) at 3 and 6 months corrected age measured by dual energy x-ray absorptiometry at forearm shaft and distal forearm in preterm infants receiving different vitamin D doses
| Group A 200 IU/kg of body weight/day up to 400 IU/day (n=21) | Group B 960 IU/day (n=18) | |||
|---|---|---|---|---|
| Mean (SD) | Mean (SD) | Mean difference (95% CI) | ||
| Forearm shaft: BMC at 3 months | 255 (49) | 258 (39) | −3 (−32 to 27) | |
| 6 months | 326 (67) | 328 (56) | −2 (−42 to 39) | |
| BMD at 3 months | 135 (16) | 139 (9) | −4 (−12 to 5) | |
| 6 months | 150 (17) | 152 (18) | −2 (−14 to 9) | |
| Distal forearm: BMC at 3 months | 201 (37) | 208 (33) | −7 (−29 to 16) | |
| 6 months | 274 (50) | 272 (46) | −1 (−29 to 33) | |
| BMD at 3 months | 109 (14) | 113 (9) | −4 (−12 to 4) | |
| 6 months | 120 (13) | 124 (11) | −4 (−11 to 4) | |