In the above-named article by Johns LE, Ferguson KK, Cantonwine DE, Mukherjee B, Meeker JD, and McElrath TF (J Clin Endocrinol Metab. 2018;103(4):1349–1358. doi: 10.1210/jc.2017-01698), the authors examined the association between thyroid hormone measures in pregnant women and fetal growth. In Table 1, the labeling of the rows representing the n (%) of the population that is carrying a male vs. a female fetus was reversed. The corrected table is shown here.
Table 1.
Population Characteristics of 439 Pregnant Women
| Population Characteristicsa | n (%)b |
|---|---|
| Age, y | |
| 18–24 | 54 (13) |
| 25–29 | 92 (21) |
| 30–34 | 176 (40) |
| 35+ | 117 (27) |
| Race/ethnicity | |
| White | 247 (56) |
| Black | 75 (17) |
| Other | 117 (27) |
| Education level | |
| High school | 67 (15) |
| Technical school | 76 (17) |
| Junior college or some college | 127 (30) |
| College graduate | 159 (38) |
| Health insurance provider | |
| Private | 344 (80) |
| Public | 83 (20) |
| BMI at initial visit, kg/m2 | |
| <25 | 223 (53) |
| 25–30 | 113 (26) |
| >30 | 99 (21) |
| In vitro fertilization | |
| No | 414 (95) |
| Yes | 25 (6) |
| Fetal sex | |
| Female | 198 (46) |
| Male | 241 (54) |
| Parity | |
| No previous pregnancies | 197 (45) |
| One previous pregnancy | 144 (34) |
| More than one previous pregnancy | 98 (21) |
| Tobacco use | |
| No smoking in pregnancy | 402 (93) |
| Smoked in pregnancy | 31 (7) |
| Alcohol use | |
| No alcohol use during pregnancy | 412 (95) |
| Alcohol use during pregnancy | 18 (5) |
Missing observations: n = 10 for education level, n = 12 for insurance provider, n = 4 for BMI, n = 9 for alcohol use, n = 6 for tobacco use, and n = 3 for subclinical hypothyroidism.
Proportions weighted by preterm birth case-control sampling probabilities to represent the general sampling population.