Table 2.
Descriptive statistics of key variables. Sample means (with standard deviation and range) or frequency (percent) of key variables, for 32 participants (across 18 households) providing DBS samples. Untransformed values are presented for ease of interpretation
| Variable | Mean (SD; range) |
|---|---|
| Age (years) | 8.28 (3.42; 3–15) |
| BMI (kg/m2) | 20.7 (4.44; 14.9–32.1) |
| Immunoglobulin E concentration (ng/mL)* | 1282.3 (2132.0; 354.2–9188) |
| Immunoglobulin G concentration (g/L) | 1.77 (0.460; 0.991–2.86) |
| CRP concentration (mg/L) | 0.398 (0.145–4.21) |
| Frequency (%) | |
| Sex | |
| Female | 16 (50.0%) |
| Male | 16 (50.0%) |
| Household income level | |
| < $10,000 | 16 (50.0%; 10 households) |
| $10,000-$19,999 | 4 (12.5%; 2 households) |
| $20,000-$34,499 | 8 (25.0%; 3 households) |
| $35,500-$49,999 | 3 (9.38%; 2 households) |
| $50,000-$74,599 | 1 (3.13%; 1 household) |
| Federal poverty-level classification | |
| Below | 23 (71.9%; 13 households) |
| Above | 9 (28.1%; 5 households) |
| CRP level classification | |
| Acutely elevated | 2 (6.25%) |
| Not elevated | 30 (93.8%) |
*IgE concentration average calculated omitting participant with high CV% value (n = 31).