Table 1 Demographic characteristics of mother-infant pairs in the Ulm birth cohort studies.
SPATZ (n = 539) | UBCS (n = 488) | |||||
|---|---|---|---|---|---|---|
n | % or mean | (95%LCL; 95%UCL) | n | % or mean | (95%LCL; 95%UCL) | |
Child sex | ||||||
Male | 287 | 53 | (49.0; 57.5) | 243 | 49.8 | (45.4; 54.2) |
Female | 252 | 47 | (42.5; 51.0) | 245 | 50.2 | (45.8; 54.6) |
Birth weight (g) | 538 | 3390.8 | (3352.0; 3429.7) | 488 | 3405.4 | (3364.8; 3446.0) |
Exclusive breastfeeding | ||||||
Yes | 425 | 79 | (75.4; 82.3) | 478 | 98 | (96.7; 99.2) |
No | 114 | 21 | (17.7; 24.6) | 10 | 2 | (0.8; 3.3) |
FUT2 heterozygousity1 | ||||||
Homozygous wild type | 143 | 27 | (22.8; 30.3) | 150 | 31 | (26.6; 34.8) |
Heterozygous | 246 | 46 | (41.4; 49.8) | 218 | 45 | (40.3; 49.1) |
Homozygous mutant | 92 | 17 | (13.9; 20.2) | 74 | 15 | (12.0; 18.3) |
Mixed status | 58 | 11 | (8.1; 13.4) | 46 | 9 | (6.8; 12.0) |
Secretor status2 | ||||||
Secretor | 421 | 78 | (74.6; 81.6) | 395 | 81 | (77.5; 84.4) |
Non-secretor | 92 | 17 | (13.9; 20.2) | 74 | 15 | (12.0; 18.3) |
Both | 26 | 5 | (3.0; 6.6) | 19 | 4 | (2.2; 5.6) |
AD up to 2 years | ||||||
Yes | 106 | 25 | (20.8; 29.0) | 110 | 34 | (28.8; 39.1) |
No | 320 | 75 | (71.0; 79.2) | 214 | 66 | (60.9; 71.2) |
OM up to 2 years | ||||||
Yes | 120 | 28 | (23.4; 31.8) | 177 | 49 | (43.5; 53.8) |
No | 315 | 72 | (68.2; 76.6) | 187 | 51 | (46.2; 56.5) |
LRTI up to 2 years | ||||||
Yes | 207 | 45 | (40.2; 49.2) | 319 | 77 | (73.4; 81.5) |
No | 256 | 55 | (50.8; 59.8) | 93 | 23 | (18.5; 26.6) |
URTI up to 2 years | ||||||
Yes | 372 | 81 | (77.3; 84.5) | 168 | 39 | (34.5; 43.8) |
No | 88 | 19 | (15.5; 22.7) | 261 | 61 | (56.2; 65.5) |
Maternal age (years) | 538 | 33.2 | (32.8; 33.6) | 487 | 32.1 | (31.7; 32.5) |
Parity (n births of foetus ≥ 24 weeks) | ||||||
0 births | 280 | 52 | (47.8; 56.3) | 235 | 48 | (43.7; 52.6) |
≥ 1 birth | 258 | 48 | (43.7; 52.2) | 253 | 52 | (47.4; 56.3) |
Gestational age at delivery (weeks) | ||||||
≤ 36 | 30 | 6 | (3.6; 7.5) | 18 | 4 | (2.0; 5.4) |
Between 36 and 41 | 423 | 79 | (75.2; 82.1) | 367 | 76 | (71.9; 79.5) |
≥ 41 | 85 | 16 | (12.7; 18.9) | 100 | 21 | (17.0; 24.2) |
Delivery mode3 | ||||||
Vaginal | 428 | 80 | (76.1; 83.0) | 414 | 85 | (81.7; 88.0) |
Cesarean | 110 | 20 | (17.0; 23.9) | 74 | 15 | (12.0; 18.3) |
Maternal secretor status4 | ||||||
Yes | 431 | 80 | (76.6; 83.3) | 344 | 71 | (66.4; 74.5) |
No | 108 | 20 | (16.7; 23.4) | 144 | 30 | (25.5; 33.6) |
Maternal ABO blood group | ||||||
A | 224 | 43 | (38.9; 47.4) | 198 | 41 | (36.5; 45.2) |
B | 74 | 14 | (11.3; 17.3) | 58 | 12 | (9.1; 14.8) |
O | 199 | 38 | (34.2; 42.5) | 211 | 44 | (39.1; 47.9) |
AB | 22 | 4 | (2.5; 6.0) | 18 | 4 | (2.0; 5.4) |
Rhesus factor | ||||||
Positive | 426 | 82 | (79.1; 85.7) | 411 | 85 | (81.5; 87.9) |
Negative | 91 | 18 | (14.3; 20.9) | 74 | 15 | (12.1; 18.5) |
Maternal milk group/Lewis blood group (UBCS)5 | ||||||
I/A−B+ | 399 | 74 | (70.3; 77.7) | 341 | 70 | (65.8; 73.9) |
II/A + B− | 101 | 19 | (15.4; 22.0) | 77 | 16 | (12.5; 19.0) |
III/A−B− | 32 | 6 | (3.9; 7.9) | 67 | 14 | (10.7; 16.8) |
IV/A + B+ | 7 | 1 | (0.3; 2.3) | 3 | 1 | (0.0; 1.3) |
Mother-child secretor matches | ||||||
Secretor to secretor | 359 | 67 | (62.6; 70.6) | 293 | 60 | (55.7; 64.4) |
Non-secretor to non-secretor | 40 | 7 | (5.2; 9.6) | 35 | 7 | (4.9; 9.5) |
Secretor to non-secretor | 52 | 10 | (7.2; 12.1) | 39 | 8 | (5.6; 10.4) |
Non-secretor to secretor | 62 | 12 | (8.8; 14.2) | 102 | 21 | (17.3; 24.5) |
Status mix | 26 | 5 | (3.0; 6.6) | 19 | 4 | (2.2; 5.6) |
