Baseline Profile of Patients Presenting With First FS (n = 1022)
| Patient Characteristic . | All Cases (n = 1022) . | NVP-FS (n = 955) . | VP-FS (n = 67) . | Pa . |
|---|---|---|---|---|
| Male sex, n (%) | 545 (53.3) | 516 (54.0) | 29 (43.3) | .09 |
| Age, median (IQR), mo | 19.8 (13.6–27.6) | 20.3 (14.2–28.1) | 13.0 (12.4–17.6) | <.001 |
| <12, n (%) | 164 (16.0) | 151 (15.8) | 13 (19.4) | — |
| 12–24, n (%) | 505 (49.4) | 455 (47.6) | 50 (74.6) | — |
| 24–36, n (%) | 214 (20.9) | 213 (22.3) | 1 (1.5) | — |
| ≥36, n (%) | 139 (13.6) | 136 (14.2) | 3 (4.5) | — |
| Indigenous, n (%) | 25 (2.4) | 25 (2.6) | 0 (0.0) | .40 |
| Country of birth, n (%) | ||||
| Australia | 929 (90.9) | 865 (90.6) | 64 (95.5) | .38 |
| Other | 40 (3.9) | 39 (4.1) | 1 (1.5) | — |
| Unknown | 53 (5.2) | 51 (5.3) | 2 (3.0) | — |
| Birth weight, n (%), g | ||||
| <1500 | 10 (1.0) | 10 (1.0) | 0 (0.0) | .11 |
| 1500–2500 | 42 (4.1) | 39 (4.1) | 3 (4.5) | — |
| 2500–4000 | 737 (72.1) | 683 (71.5) | 54 (80.6) | — |
| >4000 | 98 (9.6) | 90 (9.4) | 8 (11.9) | — |
| Unknown | 135 (13.2) | 133 (13.9) | 2 (3.0) | — |
| Gestation, n (%), wk | ||||
| <28 | 5 (0.5) | 5 (0.5) | 0 (0.0) | .24 |
| 28–31 | 4 (0.4) | 4 (0.4) | 0 (0.0) | — |
| 32–36 | 72 (7.0) | 70 (7.3) | 2 (3.0) | — |
| >36 | 880 (86.1) | 816 (85.4) | 64 (95.5) | — |
| Unknown | 61 (6.0) | 60 (6.3) | 1 (1.5) | — |
| Past medical history, n (%) | ||||
| Meningitis and/or encephalitis (resolved) | 10 (1.0) | 10 (1.0) | 0 (0.0) | .99 |
| Chronic medical conditions | 115 (11.3) | 107 (11.2) | 8 (11.9) | .84 |
| Family history, n (%) | ||||
| FSs | 382 (37.4) | 353 (37.2) | 29 (43.3) | .30 |
| Epilepsy | 171 (16.7) | 164 (17.2) | 7 (10.4) | .18 |
| Patient Characteristic . | All Cases (n = 1022) . | NVP-FS (n = 955) . | VP-FS (n = 67) . | Pa . |
|---|---|---|---|---|
| Male sex, n (%) | 545 (53.3) | 516 (54.0) | 29 (43.3) | .09 |
| Age, median (IQR), mo | 19.8 (13.6–27.6) | 20.3 (14.2–28.1) | 13.0 (12.4–17.6) | <.001 |
| <12, n (%) | 164 (16.0) | 151 (15.8) | 13 (19.4) | — |
| 12–24, n (%) | 505 (49.4) | 455 (47.6) | 50 (74.6) | — |
| 24–36, n (%) | 214 (20.9) | 213 (22.3) | 1 (1.5) | — |
| ≥36, n (%) | 139 (13.6) | 136 (14.2) | 3 (4.5) | — |
| Indigenous, n (%) | 25 (2.4) | 25 (2.6) | 0 (0.0) | .40 |
| Country of birth, n (%) | ||||
| Australia | 929 (90.9) | 865 (90.6) | 64 (95.5) | .38 |
| Other | 40 (3.9) | 39 (4.1) | 1 (1.5) | — |
| Unknown | 53 (5.2) | 51 (5.3) | 2 (3.0) | — |
| Birth weight, n (%), g | ||||
| <1500 | 10 (1.0) | 10 (1.0) | 0 (0.0) | .11 |
| 1500–2500 | 42 (4.1) | 39 (4.1) | 3 (4.5) | — |
| 2500–4000 | 737 (72.1) | 683 (71.5) | 54 (80.6) | — |
| >4000 | 98 (9.6) | 90 (9.4) | 8 (11.9) | — |
| Unknown | 135 (13.2) | 133 (13.9) | 2 (3.0) | — |
| Gestation, n (%), wk | ||||
| <28 | 5 (0.5) | 5 (0.5) | 0 (0.0) | .24 |
| 28–31 | 4 (0.4) | 4 (0.4) | 0 (0.0) | — |
| 32–36 | 72 (7.0) | 70 (7.3) | 2 (3.0) | — |
| >36 | 880 (86.1) | 816 (85.4) | 64 (95.5) | — |
| Unknown | 61 (6.0) | 60 (6.3) | 1 (1.5) | — |
| Past medical history, n (%) | ||||
| Meningitis and/or encephalitis (resolved) | 10 (1.0) | 10 (1.0) | 0 (0.0) | .99 |
| Chronic medical conditions | 115 (11.3) | 107 (11.2) | 8 (11.9) | .84 |
| Family history, n (%) | ||||
| FSs | 382 (37.4) | 353 (37.2) | 29 (43.3) | .30 |
| Epilepsy | 171 (16.7) | 164 (17.2) | 7 (10.4) | .18 |
Indigenous represents aboriginal and/or Torres Strait Islanders. —, not applicable.
χ2 or Fisher’s exact test for categorical values and Mann-Whitney U test for nonparametric continuous values; unknown categories were not included in the statistical analyses.