Table 2. Available CD4 cell measurements, frequency and follow-up time of 1959 seroconverters from European and sub-Saharan African (SSA) cohorts.
Group | |||||
Europe (non-African origin) | Europe (African origin) | SSA | Overall | ||
Median (IQR) | Median (IQR) | Median (IQR) | Median (IQR) | P-value | |
Time from seroconversion to first CD4 cell measurement (months) | 6.1 (2.7, 11.2) | 7.4 (3.6, 12.1) | 3.7 (0.6, 7.8) | 5.3 (2.4, 10.1) | <0.001 |
Time from seroconversion to last available CD4 cell measurement (years) | 3.5 (2.1, 5.2) | 3.4 (2.0, 5.1) | 3.5 (1.6, 6.3) | 3.5 (1.8, 5.7) | 0.566 |
Time from seroconversion to last CD4 cell measurement after applying truncation* (years) | 2.1 (1.1, 3.5) | 1.6 (1.0, 3.1) | 2.9 (1.4, 5.4) | 2.3 (1.2, 4.0) | <0.001 |
Interval between consecutive CD4 cell measurements (months) | 3.2 (2.3, 4.6) | 2.9 (1.6, 4.4) | 2.9 (2.4, 3.9) | 3.0 (2.3, 4.4) | 0.001 |
Number of CD4 cell measurements | 5 (3, 9) | 4 (2, 8) | 10 (6, 15) | 7 (3, 11) | <0.001 |
CD4 cell measurements after cART initiation or AIDS onset were truncated for this analysis; IQR: Interquartile Range.