Volume 29, Number 7—July 2023
Research
Trajectory and Demographic Correlates of Antibodies to SARS-CoV-2 Nucleocapsid in Recently Infected Blood Donors, United States
James M. Haynes, Roger Y. Dodd, Lauren A. Crowder, Edward P. Notari, and Susan L. Stramer
Table 3
Parameter estimates modeling repeat donor nucleocapsid S/CO for study of trajectory and demographic correlates of antibodies to SARS-CoV-2 nucleocapsid in recently infected blood donors, United States, June 2020‒June 2021*
| Parameter | Estimate (SE) | p value |
|---|---|---|
| Intercept | 2.3278 (0.06794) | <0.0001 |
| Days postpeak S/CO | −0.00656 (0.00009) | <0.0001 |
| Male sex | 0.2901 (0.08703) | 0.0009 |
| Caucasian race | −0.2856 (0.02960) | <0.0001 |
| Age at peak S/CO | 0.01445 (0.00061) | <0.0001 |
| BMI at peak S/CO | 0.03441 (0.00193) | <0.0001 |
| Male† BMI at peak S/CO | −0.00834 (0.00295) | 0.0047 |
| Days postpeak† age at peak S/CO | 0.000017 (0.000002) | <0.0001 |
*BMI, body mass index; S/CO, signal-to-cutoff value. †Multiply estimates by 100 to obtain percentage change per unit increase. Only effects that include days postpeak S/CO affect the slope of decrease where others effect peak S/CO.
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