|  |  | subgroups | |||
---|---|---|---|---|---|---|
All patients (n = 320) | Normocalcaemia (n = 52) | Hypercalcaemia (n = 146) | Hypocalcaemia (n = 9) | No information about calcium level (n = 113) | ||
Sex | N | 307 | 50 | 138 | 8 | 111 |
   Male | N (%) | 149 (48.5) | 24 (48) | 65 (47.1) | 1 (12.5) | 59 (53.1) |
   Female | N (%) | 158 (51.5) | 26 (52) | 73 (52.9) | 7 (87.5) | 52 (46.9) |
Birth weight | N | 218 | 35 | 91 | 4 | 88 |
Mean ± SD | 3606±759 | 3232±937 | 3873±650 | 2975±763 | 3638±560 | |
APGAR score ≤ 3 | N | 115 | 19 | 68 | 3 | 15 |
   1 min | N (%) | 78 (61.4) | 12 (46.2) | 47 (68.1) | 3 (66) | 9 (59.3) |
Complications that occurred during or in the first days after birth | N | 522 | 78 | 284 | 17 | 146 |
   Asphyxia | N (%) | 62 (11.9) | 8 (10.3) | 30 (10.6) | 4 (23.5) | 20 (13.7) |
   Respiratory distress | N (%) | 49 (9.4) | 10 (12.8) | 26 (9.2) | 2 (11.8) | 11 (7.5) |
   Meconium aspiration | N (%) | 48 (9.2) | 3 (3.8) | 35 (12.3) | 0 (0.0) | 10 (6.8) |
   Meconium in amniotic fluid | N (%) | 41 (7.9) | 6 (7.7) | 18 (6.3) | 3 (17.6) | 14 (9.6) |
   Hypoglycaemia | N (%) | 41 (7.9) | 4 (5.1) | 22 (7.7) | 1 (5.9) | 15 (10.3) |
   Hypoxic-ischemic encephalopathy | N (%) | 35 (6.7) | 8 (10.3) | 21 (7.4) | 1 (5.9) | 5 (3.4) |
   Cerebral seizures | N (%) | 27 (5.2) | 4 (5.1) | 18 (6.3) | 0 (0.0) | 5 (3.4) |
   Sepsis or infection | N (%) | 22 (4.2) | 0 (0.0) | 11 (3.9) | 0 (0.0) | 11 (7.5) |
   Hypoxaemia | N (%) | 20 (3.8) | 0 (0.0) | 10 (3.5) | 0 (0.0) | 8 (5.5) |
   Peripheral cyanosis | N (%) | 20 (3.8) | 5 (6.4) | 7 (2.5) | 0 (0.0) | 8 (5.5) |
   Tachypnea | N (%) | 14 (2.7) | 2 (2.6) | 5 (1.8) | 2 (11.8) | 5 (3.4) |
   Hypotension | N (%) | 14 (2.7) | 2 (2.6) | 9 (3.2) | 1 (5.9) | 2 (1.7) |
   Anaemia/thrombocytopenia | N (%) | 14 (2.7) | 2 (2.6) | 5 (1.8) | 0 (0.0) | 8 (5.8) |
   Acute renal failure | N (%) | 10 (2.0) | 2 (2.6) | 7 (2.5) | 0 (0.0) | 1 (0.7) |
   Foetal disstress | N (%) | 10 (2.0) | 3 (3.8) | 7 (2.5) | 0 (0.0) | 0 (0.0) |
   Bradycardia | N (%) | 10 (2.0) | 1 (1.1) | 6 (2.1) | 0 (0.0) | 3 (2.1) |
   Dystocia | N (%) | 5 (1.0) | 3 (3.8) | 0 (0.0) | 1 (5.9) | 1 (0.7) |
   Further | N (%) | 80 (15.3) | 13 (16.7) | 48 (16.9) | 2 (11.8) | 17 (11.6) |
Treatment of birth complications | ||||||
 Drugs | N (%) | 78 (30.5) | 14 (26.4) | 37 (30.3) | 3 (37.5) | 24 (32.9) |
 Intubation and ventilation | N (%) | 75 (29.3) | 15 (28.3) | 34 (27.9) | 2 (25.0) | 24 (32.9) |
 Therapeutic hypothermia treatment | N (%) | 51 (19.9) | 11 (20.8) | 27 (22.1) | 1 (12.5) | 12 (16.4) |
 Reanimation | N (%) | 46 (18.0) | 11 (20.8) | 23 (18.9) | 1 (12.5) | 11 (15.1) |
 Coma | N (%) | 3 (1.2) | 0 (0.0) | 1 (0.8) | 0 (0.0) | 2 (2.7) |
 Phototherapy | N (%) | 2 (0.8) | 2 (3.8) | 0 (0.0) | 0 (0.0) | 0 (0.0) |
 Reduction of the intracranial pressure | N (%) | 1 (0.4) | 0 (0.0) | 0 (0.0) | 1 (12.5) | 0 (0.0) |