Table 3.
Relationship between radiation dose and potential mediators
| RORc at 1 Gy | 95% CIe | |
|---|---|---|
| Birth weight | ||
| ≥ 2500 g | Ref.f | |
| < 2500 g | 3.47 | (2.37–5.08) |
| Unknowna | 2.84 | (1.74–4.65) |
| No informationb | 0.00 | (0.00–0.01) |
| ORd at 1 Gy | 95% CIe | |
|---|---|---|
| Head size | ||
| Normal | Ref.f | |
| Small | 5.16 | (3.18–8.38) |
| RORc at 1 Gy | 95% CIe | |
|---|---|---|
| Father’s status | ||
| Alive | Ref.f | |
| Lost | 2.27 | (1.63–3.17) |
| No information | 0.00 | (0.00–0.13) |
| Mother’s status | ||
| Alive | Ref.f | |
| Lost | 1.31 | (0.83–2.06) |
| No information | 0.00 | (0.00–0.02) |
Multinomial logistic regression was applied to estimate the RORs of birth weight and parental survival status, while logistic regression was used to estimate the OR of small head size
Radiation dose was adjusted for sex, city, cohort source, location at time of bombing, and trimester
aUnknown: Individuals who were surveyed but of whom information was insufficient in either the clinical program and the socioeconomic survey
bNo information: Individuals who were not surveyed in any programs
cROR: Relative odds ratio
dOR: Odds ratio
eCI: Confidence interval
fRef.: reference