Population (n = 908,324) | Humerus shaft fracture | ||||||
---|---|---|---|---|---|---|---|
Birth-related (n = 188) | Later Age in months | ||||||
< 6 (n = 96) | 6 to 12 (n = 46) | ||||||
n (%) | n (%) | p value* | n (%) | p value* | n (%) | p value* | |
Mother | |||||||
Obesity | 302,623 (37) | 81a (47) | .007 | 46 (54) | .001 | 21 (46) | .285 |
Preeclampsia | 28,968 (3.2) | 9 (5) | .205 | 4 (4) | .550 | 3 (7) | .177 |
Birth | |||||||
Dystocic labor | 107,215 (11.8) | 43 (23) | .000 | 12 (13) | .753 | 8 (17) | .249 |
Shoulder dystocia | 2005 (0.2) | 69 (37) | .000 | 16 (17) | .000 | 0 | |
Cesarean section | 161,554 (18) | 35 (19) | .782 | 25 (26) | .040 | 12 (26) | .174 |
Vacuum | 69,101 (8) | 47 (25) | .000 | 10 (10) | .331 | 2 (4) | .581 |
Forceps | 2473 (0.3) | 1 (0.5) | .401 | 1 (1) | .230 | 0 | |
Child | |||||||
Boy | 469,339 (52) | 123 (66) | .000 | 58 (60) | .106 | 25 (54) | .831 |
Multiple birth | 26,645 (2.9) | 13 (7) | .004 | 4 (4) | .369 | 5 (11) | .011 |
Breech | 34,007 (3.3) | 18 (10) | .000 | 5 (5) | .412 | 5 (11) | .028 |
Preterm | 56,533 (6.2) | 24 (13) | .001 | 9 (9) | .201 | 2 (4) | 1.0 |
SGAb (< 10th percentile) | 94,244 (10.4) | 16 (9) | .541 | 14 (15) | .181 | 9 (20) | .052 |
SGAb (< 2.5th percentile) | 20,566 (2.3) | 3 (2) | .802 | 3 (3) | .478 | 4 (10) | .015 |
LGAc (> 2.5th percentile) | 32,141 (3.7) | 50 (29) | .000 | 13 (14) | .001 | 0 | |
Birth weight > 4000 g | 169,479 (19) | 82 (44) | .000 | 32 (33) | .000 | 4 (9) | .089 |
Injury of brachial plexus | 1969 (0.1) | 45 (24) | .000 | 17d (18) | .000 | 0 | |
Other diagnosis during infancy | |||||||
Osteogenesis imperfecta | 76 (0.004)e | 1 (0.5) | .017 | 3 (3) | .000 | 4f (9) | .000 |
Rickets or VDDg | 261 (0.01)e | 1 (0.5) | .052 | 1 (1) | .000 | 0 | |
Maltreatment | 1347 (0.07)e | 0 | 12h (14) | .000 | 2i (4) | .000 |