Table 1 Selected characteristics of subjects contributing samples at 6 weeks (n = 158) and at 12 months of age (n = 282)
From: Associations between the gut microbiome and metabolome in early life
|  | 6 weeks (n = 158) | 12 months (n = 282) |
|---|---|---|
Birthweight (grams) | ||
 Mean (Standard Deviation) | 3370 (480) | 3430 (528) |
 Median [Minimum, Maximum] | 3430 [1910, 4710] | 3450 [1320, 4660] |
 Missing | 2 (1.3%) | 4 (1.4%) |
Sex | ||
 Male | 85 (53.8%) | 159 (56.4%) |
 Female | 73 (46.2%) | 123 (43.6%) |
Feeding Mode Until Time of Sample Collection | ||
 Unknown | 6 (3.8%) | 7 (2.5%) |
 Exclusively breastfed | 98 (62%) | 99 (35.1%) |
 Exclusively formula fed | 13 (8.2%) | 9 (3.2%) |
 Mixed | 41 (25.9%) | 167 (59.2%) |
Delivery Mode | ||
 Vaginal | 114 (72.2%) | 200 (70.9%) |
 Cesarean | 44 (27.8%) | 82 (29.1%) |
Gestational Age (Weeks) | ||
 Mean (SD) | 39.1 (1.59) | 39.0 (1.70) |
 Median [Minimum, Maximum] | 39.1 [33.4, 43.0] | 39.1 [29.1, 42.0] |
Post-delivery infant systemic antibiotic exposure | ||
 No | 151 (95.6%) | 274 (97.2%) |
 Yes | 7 (4.4%) | 8 (2.8%) |
Maternal smoking during pregnancy | ||
 No | 143 (90.5%) | 262 (92.9%) |
 Yes | 11 (7.0%) | 14 (5.0%) |
 Missing | 4 (2.5%) | 6 (2.1%) |
Infant Race | ||
 Other | 4 (2.5%) | 13 (4.6%) |
 White | 154 (97.5%) | 269 (95.4%) |