Soins maternels intensifs (Maternal Intensive Care) en Belgique - KCE

58 Maternal Intensive Care in Belgium KCE Reports 94
Gestational age
DISTRIBUTION OF GESTATIONAL AGE
Table 25: Distribution of gestational age according to type of maternity
Maternities
without MICservices
Maternities
with MIC-services All
22-28 : Extreme prematurity
136 0.2% 427 1.5% 563 0.6%
29-32 : Very preterm 316 0.4% 679 2.5% 995 1.0%
33-36 : Preterm delivery 4,430 6.3% 2,128 7.7% 6,558 6.7%
37-42 : Term delivery 65,716 93.1% 24,383 88.3% 90,099 91.7%
>=42 : Prolonged pregnancy 5 0.0% 4 0.0% 9 0.0%
Missing information 9 7 16
All 70,612 100.0% 27,628 100.0% 98,240 100.0%
Source: Merged IMA and MKG/RCM Data 01/10/2003 – 30/09/2004
Birth weight
The maternities with a MIC-service deliver more women with premature neonates than
the others (1.5% versus 0.2% for the extremely premature; 2.5% versus 0.4% for the
very preterm; 7.7% versus 6.3% for the premature). The difference is statically
significant; χ² test, p value < 0.0001.
24.5% of the extremely preterm babies and 31.8 % of the very preterm were
born in a maternity without a MIC-service.
DISTRIBUTION OF BIRTH WEIGHT
Table 26: Distribution of birth weight according to type of maternity
Maternities
without MIC-services
Maternities
with MIC-services All
500 - 999 : Extreme low birth weight 103 0.1% 341 1.2% 444 0.5%
1000 - 1499 : Very low birth weight 188 0.3% 442 1.6% 630 0.6%
1500 - 2499 : Low birth weight 3,940 5.6% 2,164 7.8% 6,104 6.2%
2500 - 3999 : Normal birth weight 60,920 86.3% 22,828 82.6% 83,748 85.2%
>=4000 : High birth weight 5,430 7.7% 1,805 6.5% 7,235 7.4%
Missing information 31 48 79
All 70,612 100.0% 27,628 100.0% 98,240 100.0%
Source: Merged IMA and MKG/RCM Data 01/10/2003 – 30/09/2004
The birth weight is tightly linked to the term of the newborn.
The proportion of neonates with extremely low birth weight (ELBW) (1.2% versus
0.1%), of very low birth weight (VLBW)(1.6% versus 0.3%) and of low birth weight
(7.8% versus 5.6%) is higher in the maternities with MIC-service than in the others. The
difference is statistically significant; χ² test, p value < 0.0001.
Overall 23.2% of the neonates with ELBW, 29.8% of the VLBW and 64.5% of
the LBW (Low Birth Weight) were born in maternities without MIC-service.