Numbers of births, deaths from external causes, and death rates among infants in the cohort
| No (%) of births | No (%) of deaths | Rate/100 000 (95% confidence interval) | |
|---|---|---|---|
| Total | 387496 (100) | 195 (100) | 50 (44 to 58) |
| Sex of the infant | |||
| Girl | 188626 (48.7) | 69 (35.4) | 37 (28 to 46) |
| Boy | 198870 (51.3) | 126 (64.6) | 63 (53 to 75) |
| Education of mother | |||
| Primary | 53656 (13.9) | 63 (32.3) | 117 (90 to 150) |
| Vocational | 150753 (38.9) | 88 (45.1) | 58 (47 to 72) |
| Secondary | 148722 (38.4) | 38 (19.5) | 26 (18 to 35) |
| University | 34365 (8.9) | 6 (3.1) | 17 (6 to 38) |
| Nationality of mother | |||
| Czech | 366422 (94.6) | 182 (93.3) | 50 (43 to 57) |
| Other | 21074 (5.4) | 13 (6.7) | 62 (33 to 105) |
| Marital status of mother | |||
| Married | 353565 (91.2) | 149 (76.4) | 42 (36 to 49) |
| Single | 24165 (6.2) | 32 (16.4) | 132 (91 to 187) |
| Divorced | 8753 (2.3) | 12 (6.2) | 137 (71 to 239) |
| Widowed | 1013 (0.3) | 2 (1.0) | 197 (24 to 711) |
| Maternal age (years) | |||
| <20 | 55817 (14.4) | 41 (21.0) | 73 (53 to 100) |
| 20–24 | 174403 (45.0) | 90 (46.2) | 52 (42 to 63) |
| 25–29 | 103181 (26.6) | 39 (20.0) | 38 (27 to 52) |
| 30–34 | 38399 (9.9) | 15 (7.7) | 39 (22 to 64) |
| 35+ | 15696 (4.1) | 10 (5.1) | 64 (31 to 117) |
| Multiplicity | |||
| 1 | 380633 (98.2) | 182 (93.3) | 48 (41 to 55) |
| 2+ | 6863 (1.8) | 13 (6.7) | 189 (101 to 324) |
| Birth order | |||
| 1 | 187613 (48.4) | 80 (41.0) | 43 (34 to 53) |
| 2 | 142126 (36.7) | 68 (34.9) | 48 (37 to 61) |
| 3+ | 57757 (14.9) | 47 (24.1) | 81 (60 to 108) |
| Birth weight (g) | |||
| <2500 | 21348 (5.5) | 23 (11.8) | 108 (68 to 162) |
| 2500–3499 | 223419 (57.7) | 120 (61.5) | 54 (45 to 64) |
| ≥3500 | 142729 (36.8) | 52 (26.7) | 36 (27 to 48) |
| Gestational age (weeks) | |||
| <38 | 33613 (8.7) | 35 (18.0) | 104 (73 to 145) |
| ≥38 | 353883 (91.3) | 160 (82.0) | 45 (38 to 53) |