Table 1.
Characteristics of Enrolled and Non-enrolled Infants with Pertussis
| Enrolled (%) n=251 | Non-enrolled (%) n=537 | p-value | |
|---|---|---|---|
| Sexa, male | 123 (49.0) | 258 (49.3) | .99 |
| Raceb | .07 | ||
| White | 199 (80.9) | 356 (77.5) | |
| Black | 22 (8.9) | 30 (6.5) | |
| Other | 25 (10.1) | 73 (15.9) | |
| Hispanic Ethnicityc | 156 (62.2) | 297 (60.0) | .57 |
| Hospitalizedd | 164 (66.1) | 305 (67.6) | .69 |
| Died | 0 | 7 (1.3) | — |
| State | .0001 | ||
| California | 172 (68.5) | 418 (77.8) | |
| Connecticut | 14 (5.6) | 9 (1.7) | |
| Minnesota | 19 (7.6) | 30 (5.6) | |
| New Mexico | 22 (8.7) | 17 (3.2) | |
| New York | 12 (4.8) | 42 (7.8) | |
| Oregon | 12 (4.8) | 21 (3.9) | |
| Case Classificatione | 0.31 | ||
| Laboratory-confirmed | 235 (93.6) | 492 (91.6) | |
| Epidemiologically-linked | 1 (0.4) | 9 (1.7) | |
| Clinically-compatible | 15 (6.0) | 35 (6.5) | |
| Insurance Typef | .05 | ||
| Medicaid or no insurance | 131 (59.8) | 299 (67.5) | |
| Private, self-pay, or other | 88 (40.2) | 144 (32.5) | |
| Maternal Educationg | .001 | ||
| High School or less | 120 (53.6) | 295 (66.6) | |
| More than High School | 104 (46.4) | 148 (33.4) |
a
Calculated from those with known sex (n=251 for enrolled; n=523 for non-enrolled)
b
Calculated from those with known race (n=246 for enrolled; n=459 for non-enrolled)
c
Calculated from those with known ethnicity (n=495 non-enrolled)
d
Calculated from those with known hospitalization status (n=248 enrolled; n=451 non-enrolled)
e
Calculated from those with known case classification (n=251 enrolled; n=536 non-enrolled)
f
Calculated from those with known insurance type (n=219 enrolled; n=443 non-enrolled)
g
Calculated from those with known maternal education (n=224 enrolled; n=443 non-enrolled)