Incidence of idiopathic intracranial haemorrhage (ICH) in infants between day 8 and the end of week 12, in rural and urban Hanoi, 1995–1999
1995 | 1996 | 1997 | 1998 | 1999 | 5 year totals | |
---|---|---|---|---|---|---|
*Rural infants received no vitamin K prophylaxis in any year. | ||||||
†Urban infants born at the Hanoi Obstetric and Gynaecological Hospital received vitamin K prophylaxis in 1998 and 1999 only. | ||||||
‡Incidence per 100 000 births (95% confidence interval) based on five year totals. | ||||||
Rural areas* | ||||||
Total births | 25290 | 24318 | 23652 | 22189 | 20301 | 115750 |
Number of cases of idiopathic ICH | 38 | 32 | 33 | 39 | 22 | 164 |
Incidence of ICH per 100 000 births (no prophylaxis) | 150 | 132 | 140 | 176 | 108 | 142 (122 to 165)‡ |
Urban areas | ||||||
Total births | 18502 | 19383 | 20058 | 21817 | 19871 | 99631 |
Number receiving no prophylaxis† | 18502 | 19383 | 20058 | 14613 | 12189 | 84745 |
Number receiving prophylaxis† | Nil | Nil | Nil | 7204 | 7682 | 14886 |
Number of cases of idiopathic ICH | 15 | 22 | 16 | 7 | 9 | 69 |
Incidence of ICH per 100 000 births (no prophylaxis) | 81 | 114 | 80 | 48 | 74 | 81 (65 to 101)‡ |
Incidence of ICH per 100 000 births (total births) | 81 | 114 | 80 | 32 | 45 | 69 (55 to 88)‡ |
Combined rural and urban areas | ||||||
Total births | 43792 | 43701 | 43710 | 44006 | 40172 | 215381 |
Number receiving no prophylaxis | 43792 | 43701 | 43710 | 36802 | 32490 | 200495 |
Number of cases of idiopathic ICH | 53 | 54 | 49 | 46 | 31 | 233 |
Incidence of ICH per 100 000 births (no prophylaxis) | 121 | 124 | 112 | 125 | 95 | 116 (102 to 132)‡ |
Incidence of ICH per 100 000 births (total births) | 121 | 124 | 112 | 105 | 77 | 108 (95 to 123)‡ |