Table 3.
Unadjusted and adjusted logistic regression outcomes for perinatal characteristics.
| Variable name | Unadjusteda |
Adjusted for covariatesb |
||||
|---|---|---|---|---|---|---|
| Embryonal (n = 218) | Alveolar (n = 81) | All-type RMS (n = 359) | Embryonal (n = 218) | Alveolar (n = 81) | All-type RMS (n = 359) | |
| OR (95% CI) | OR (95% CI) | OR (95% CI) | OR (95% CI) | OR (95% CI) | OR (95% CI) | |
| CHILD’S CHARACTERISTICS | ||||||
| Child’s gender | ||||||
| Male | 1.59 (1.21, 2.09) | 1.33 (0.86, 2.07) | 1.52 (1.23, 1.88) | 1.60 (1.22, 2.11) | 1.28 (0.82, 1.99) | 1.52 (1.23, 1.89) |
| Female | Reference | |||||
| Plurality | ||||||
| Singleton | Reference | |||||
| Multiple birth | 1.70 (0.87, 3.31) | 1.93 (0.71, 5.28) | 1.58 (0.92, 2.69) | 1.70 (0.87, 3.32) | 2.11 (0.76, 5.81) | 1.60 (0.94, 2.75) |
| Gestation length (in weeks) | ||||||
| 20–32 | 1.58 (0.70, 3.57) | 1.34 (0.33, 5.46) | 1.42 (0.73, 2.76) | 1.45 (0.63, 3.34) | 1.05 (0.25, 4.46) | 1.30 (0.66, 2.55) |
| 33–36 | 0.94 (0.56, 1.57) | 0.59 (0.21, 1.61) | 0.95 (0.64, 1.41) | 0.89 (0.52, 1.50) | 0.51 (0.18, 1.42) | 0.89 (0.60, 1.34) |
| 37–42 | Reference | |||||
| 43–45 | 1.53 (0.87, 2.68) | 0.97 (0.31, 3.09) | 1.22 (0.75, 1.99) | 1.56 (0.89, 2.74) | 0.97 (0.30, 3.08) | 1.23 (0.75, 2.01) |
| MATERNAL CHARACTERISTICS | ||||||
| Maternal age at child birth | ||||||
| <20 | 0.88 (0.54, 1.43) | 0.92 (0.43, 1.96) | 0.76 (0.51, 1.12) | 0.85 (0.51, 1.41) | 0.83 (0.38, 1.81) | 0.73 (0.49, 1.10) |
| 20-29 | Reference | |||||
| 30-34 | 1.31 (0.95, 1.80) | 0.99 (0.57, 1.69) | 1.12 (0.87, 1.44) | 1.33 (0.96, 1.84) | 1.01 (0.57, 1.78) | 1.13 (0.88, 1.47) |
| ≥35 | 1.31 (0.89 (1.92) | 1.00 (0.53, 1.91) | 1.11 (0.82, 1.51) | 1.30 (0.87, 1.95) | 1.09 (0.56, 2.14) | 1.10 (0.80, 1.51) |
| Per 1-year increase | 1.02 (1.00, 1.05) | 1.00 (0.97, 1.04) | 1.02 (1.00, 1.04) | 1.02 (1.00, 1.05) | 1.01 (0.97, 1.05) | 1.02 (1.00, 1.04) |
| Maternal race/ethnicity | ||||||
| Non-Hispanic white | Reference | |||||
| Hispanic of any race | 0.72 (0.53, 0.97) | 1.06 (0.63, 1.77) | 0.81 (0.64, 1.02) | 0.78 (0.57, 1.08) | 1.10 (0.64, 1.89) | 0.85 (0.66, 1.08) |
| Other | 0.95 (0.66, 1.37) | 1.41 (0.78, 2.57) | 1.02 (0.76, 1.35) | 0.98 (0.68, 1.41) | 1.44 (0.79, 2.64) | 1.02 (0.77, 1.36) |
| PREGNANCY HISTORY | ||||||
| Parity | ||||||
| Nulliparous | Reference | |||||
| One child | 1.08 (0.79, 1.47) | 1.02 (0.62, 1.70) | 1.10 (0.86, 1.40) | 1.01 (0.73, 1.38) | 1.01 (0.60, 1.71) | 1.03 (0.80, 1.33) |
| Two children | 0.88 (0.59, 1.31) | 0.77 (0.39, 1.52) | 0.95 (0.70, 1.29) | 0.82 (0.54, 1.24) | 0.67 (0.32, 1.39) | 0.87 (0.63, 1.21) |
| Three or more children | 0.78 (0.49, 1.25) | 0.95 (0.47, 1.94) | 0.90 (0.63, 1.27) | 0.70 (0.43, 1.16) | 0.84 (0.39, 1.80) | 0.82 (0.56, 1.19) |
| Prenatal care began in | ||||||
| First trimester | Reference | |||||
| After first trimester/no care | 1.01 (0.72, 1.41) | 1.62 (0.98, 2.67) | 1.17 (0.91, 1.50) | 1.17 (0.83, 1.65) | 1.71 (1.02, 2.87) | 1.30 (1.00, 1.68) |
| PATERNAL CHARACTERISTICS | ||||||
| Paternal age at child birth | ||||||
| <20 | 0.63 (0.26, 1.55) | 1.49 (0.52, 4.24) | 0.79 (0.42, 1.50) | 0.67 (0.27, 1.67) | 1.45 (0.50, 4.23) | 0.82 (0.43, 1.58) |
| 20–29 | Reference | |||||
| 30–34 | 1.06 (0.75, 1.49) | 1.17 (0.66, 2.06) | 1.13 (0.86, 1.47) | 1.08 (0.75, 1.55) | 1.26 (0.69, 2.31) | 1.16 (0.88, 1.54) |
| ≥35 | 1.28 (0.92, 1.77) | 1.31 (0.76, 2.27) | 1.27 (0.98, 1.65) | 1.31 (0.92, 1.87) | 1.45 (0.80, 2.63) | 1.32 (1.00, 1.75) |
| Per 1-year increase | 1.02 (1.00, 1.04) | 1.02 (0.99, 1.05) | 1.02 (1.00, 1.03) | 1.02 (1.00, 1.04) | 1.02 (0.99, 1.06) | 1.02 (1.00, 1.04) |
aAdjusted for birthyear. bAdjusted for the following variables: birth year, child sex, plurality, maternal race/ethnicity, maternal age, parity, and prenatal care. Prenatal care not included in the model for child’s sex.