Table 3

Annual summaries of the clinical characteristics of selected babies from 2010 to 2017

Clinical characteristicsYearMean (%)
20102011201220132014201520162017
Level of arterial umbilical blood pH, count (%)
 <6.9121 (30.0)147 (26.4)159 (27.8)186 (27.4)169 (22.2)170 (22.1)168 (22.9)148 (21.1)25.0
 6.9–7.068 (16.9)93 (16.7)103 (17.9)121 (17.8)144 (18.9)121 (15.7)112 (15.2)122 (17.4)17.1
 >7.0106 (26.3)166 (29.8)172 (30.0)210 (30.9)252 (33.0)247 (32.0)209 (28.4)231 (32.9)30.4
 Missing data108 (26.8)151 (27.1)139 (24.3)163 (23.9)198 (25.9)233 (30.2)246 (33.5)202 (28.7)27.6
Apgar score at 1min, count (%)
[0–3]320 (79.4)440 (78.9)442 (77.1)512 (75.3)587 (76.9)589 (76.4)540 (73.5)528 (75.1)76.6
[4–7]49 (12.2)73 (13.1)78 (13.6)102 (15.0)100 (13.1)95 (12.3)99 (13.5)93 (13.2)13.3
[8–10]5 (1.2)8 (1.4)18 (3.1)18 (2.7)20 (2.6)18 (2.3)31 (4.2)22 (3.1)2.6
 Missing data29 (7.2)36 (6.5)35 (6.1)48 (7.1)56 (7.3)69 (8.9)65 (8.8)60 (8.5)7.6
Apgar score at 5 min, count (%)
[0–3]162 (40.2)241 (43.3)218 (38.1)272 (40.0)282 (36.9)287 (37.2)272 (37.0)261 (37.1)38.7
[4–7]193 (47.9)253 (45.4)275 (47.9)307 (45.2)368 (48.2)359 (46.6)352 (47.9)320 (45.5)46.8
[8–10]17 (4.2)26 (4.7)44 (7.7)55 (8.1)61 (7.9)56 (7.3)54 (7.4)60 (8.5)7.0
 Missing data31 (7.7)37 (6.6)36 (6.3)46 (6.8)52 (6.8)69 (8.9)57 (7.8)62 (8.8)7.5
Intubation at delivery
 Count (%)283 (70.2)405 (72.7)400 (69.8)446 (65.6)498 (65.3)510 (66.2)471 (64.1)420 (59.7)66.7
Chest compressions at delivery
 Count (%)177 (43.92)257 (46.1)253 (44.2)253 (37.2)268 (35.1)292 (37.9)280 (38.1)224 (31.9)39.3
Resuscitation drugs at delivery
 Count (%)89 (22.1)108 (19.4)108 (18.9)107 (15.7)101 (13.2)112 (14.5)123 (16.7)95 (13.5)16.8
Seizures on day 1
 Count (%)176 (43.7)205 (36.8)211 (36.8)226 (33.2)214 (28.1)222 (28.8)186 (25.3)180 (25.6)32.3
Use of inotropes on day 1
 Count (%)136 (33.8)172 (30.9)157 (27.4)173 (25.4)183 (23.9)162 (21.0)180 (24.5)143 (20.3)25.9
Nitric oxide administered on day 1
 Count (%)15 (3.7)26 (4.7)25 (4.4)31 (4.6)35 (4.6)38 (4.9)32 (4.4)38 (5.4)4.6
Invasive ventilation on day 1
 Count (%)336 (83.4)468 (84.0)467 (81.5)538 (79.1)612 (80.2)601 (77.9)585 (79.6)545 (77.5)80.4