Table 2.
Anti-H1N1 antibodies
| GMT (95% CI) | RT Patients (n = 111) | HD Patients (n = 53) | Controls (n = 21) | P |
|---|---|---|---|---|
| GMT day 0 | 11 (8 to 14) | 8 (6 to 11) | 9 (4 to 19) | 0.56 |
| GMT day 30 | 50 (34 to 72) | 77 (44 to 136) | 361 (166 to 782) | <0.001a,b |
| GMT ratio | 5 (3 to 6) | 9 (5 to 16) | 38 (19 to 78) | <0.001a,c |
| Seroconversion (%) | 49/111 (44%) | 30/53 (57%) | 19/21 (90%) | <0.001a,d |
GM, geometric mean titer; CI, confidence interval; RT, renal transplant; HD, hemodialysis.
a
P < 0.001 for intergroup comparisons.
b
P < 0.001 for all intragroup comparisons between days 30 and 0.
c
Post-tests: control versus HD, P = 0.003; control versus RT, P = 0.001; HD versus RT, P = 0.02.
d
P < 0.001 by χ2 for trend.