Table 1 Characteristics of the participants related to dental treatment during pregnancy (n = 90,886)
From: Polymer-based dental filling materials placed during pregnancy and risk to the foetus
Did not consult a dentist | Consulted a dentist, no white fillings placed | Consulted a dentist, white filling placed | Total | |
|---|---|---|---|---|
Number of participating pregnancies, n (%) | 57,159 (62.9) | 22,755 (25.0) | 10,972 (12.1) | 90,886 (100) |
Maternal age (years), n (%) | ||||
≤ 19 | 525 (0.9) | 207 (0.9) | 127 (1.2) | 859 (0.9) |
20–24 | 6056 (10.6) | 1767 (7.8) | 1195 (10.9) | 9018 (9.9) |
25–29 | 19,288 (33.7) | 7159 (31.5) | 3686 (33.6) | 30,133 (33.2) |
30–34 | 21,928 (38.4) | 9273 (40.8) | 3990 (36.4) | 35,191 (38.7) |
35–39 | 8315 (14.5) | 3856 (16.9) | 1711 (15.6) | 13,882 (15.3) |
≥ 40 | 1047 (1.8) | 493 (2.2) | 263 (2.4) | 1803 (2.0) |
Maternal pre-pregnant Body Mass Index, n (%) | ||||
< 18.5 | 1663 (2.9) | 660 (2.9) | 319 (2.9) | 2642 (2.9) |
18.5–24.9 | 36,021 (63.0) | 14,956 (65.7) | 6655 (60.7) | 57,632 (63.4) |
25.0–29.9 | 12,003 (21.0) | 4542 (20.0) | 2443 (22.3) | 18,988 (20.9) |
30.0–34.9 | 3837 (6.7) | 1402 (6.2) | 842 (7.7) | 6081 (6.7) |
35.0–39.9 | 1091 (1.9) | 354 (1.6) | 232 (2.1) | 1677 (1.8) |
≥ 40 | 341 (0.6) | 124 (0.5) | 68 (0.6) | 533 (0.6) |
Missing | 2203 (3.9) | 717 (3.2) | 413 (3.8) | 3333 (3.7) |
Parity, n (%) | ||||
Para 0 (first pregnancy) | 25,428 (44.5) | 10,897 (47.9) | 4836 (44.1) | 41,161 (45.3) |
Para 1+ (second pregnancy or more) | 31,731 (55.5) | 11,858 (52.1) | 6136 (55.9) | 49,725 (54.7) |
Maternal education, n (%) | ||||
≤ 12 years | 18,849 (33.0) | 6831 (30.0) | 4177 (38.1) | 29,857 (32.9) |
13–16 years | 22,042 (38.6) | 9226 (40.5) | 4018 (36.6) | 35,286 (38.8) |
≥17 years | 12,725 (22.3) | 5366 (23.6) | 2097 (19.1) | 20,188 (22.2) |
Missing | 3543 (6.2) | 1332 (5.9) | 680 (6.2) | 5555 (6.1) |
Smoking during pregnancy, n (%) | ||||
Never | 45,831 (80.2) | 18,208 (80.0) | 8420 (76.7) | 72,459 (79.7) |
Occasionally | 1421 (2.5) | 567 (2.5) | 374 (3.4) | 2362 (2.6) |
Daily | 2848 (5.0) | 968 (4.3) | 821 (7.5) | 4637 (5.1) |
Missing | 7059 (12.3) | 3012 (13.2) | 1357 (12.4) | 11,428 (12.6) |
Alcohol during pregnancy, n (%) | ||||
Never | 42,203 (73.8) | 16,731 (73.5) | 7834 (71.4) | 66,768 (73.5) |
Less than once a week | 5709 (10.0) | 2512 (11.0) | 1251 (11.4) | 9472 (10.4) |
Once a week | 233 (0.4) | 100 (0.4) | 46 (0.4) | 379 (0.4) |
More than once a week | 39 (0.1) | 25 (0.1) | 6 (0.1) | 70 (0.1) |
Missing | 8975 (15.7) | 3387 (14.9) | 1835 (16.7) | 14,197 (15.6) |