Table 3.
Risk of intrauterine growth restriction (IUGR) in relation to timing of dental treatment (n = 32,168)
| Treatment | Period of treatment | Number with claims | IUGR n (%) |
Adjusted odds ratio (95% confidence interval) | ||
|---|---|---|---|---|---|---|
| Overall | Primiparous women | Multiparous women | ||||
| Periodontal | Pre-gestation | 428 | 22 (5.1%) | 0.7 (0.4, 1.1) | 0.5 (0.2, 1.1) | 0.9 (0.5, 1.5) |
| Gestation | 540 | 40 (7.4%) | 1.2 (0.8, 1.7) | 1.4 (0.8, 2.4) | 1.1 (0.7, 1.7) | |
| Post-birth | 2088 | 192 (9.2%) | 1.5 (1.2, 1.8) | 1.3 (1.0, 1.8) | 1.6 (1.3, 1.9) | |
| Prophylaxis | Pre-gestation | 3387 | 220 (6.5%) | 1.0 (0.8, 1.3) | 1.0 (0.7, 1.6) | 1.0 (0.7, 1.4) |
| Gestation | 7043 | 409 (5.8%) | 1.0 (0.8, 1.2) | 1.1 (0.8, 1.6) | 0.9 (0.7, 1.2) | |
| Post-birth | 11,743 | 743 (6.3%) | 1.0 (0.8, 1.2) | 0.9 (0.7, 1.2) | 1.0 (0.9, 1.3) | |
| Any dental | Pre-gestation | 4655 | 306 (6.6%) | 1.2 (0.9, 1.5) | 1.0 (0.7, 1.5) | 1.2 (0.9, 1.7) |
| Gestation | 8986 | 535 (6.0%) | 0.9 (0.7, 1.1) | 0.8 (0.6, 1.2) | 0.9 (0.7, 1.2) | |
| Post-birth | 14,969 | 986 (6.6%) | 1.1 (0.9, 1.3) | 1.2 (0.9, 1.6) | 1.1 (0.9, 1.3) | |
Odds ratios were adjusted for the confounding effects of maternal age, maternal age-square, household income, proportions of African-American and Hispanic ethnicities, and complications of pregnancy. An individual subject may have had a claim in more than one time period, and/or may have received more than one type of treatment in a given time period; the regression models adjust for these instances of multiple treatment exposures