Characteristic

Stage 1

Stage 2

Total

p value

Age (mean ± SEM)

23.8 ± 5.9

29.4 ± 3.7

28.2 ± 3.1

0.465

Sex

Male

7 (21.9%)

25 (78.1%)

32 (78%)

0.65

Female

2 (22.2%)

7 (77.8%)

9 (22%)

CSF WBC count (mean ± SEM)

4.1 ± 0.5

57.9 ± 7.8

46.1 ± 7.0

0.0001*

Trypanosomes in CSF

0

29 (90.6%)

29 (70.3%)

0.0001*

Parasitaemia by HCT (tryps/capillary)

1 - 4

2 (25%)

6 (75%)

8 (19.5%)

0.575

5 - 9

6 (26.1%)

17 (73.9)

23 (56.1%)

≥10

1 (10%)

9 (90%)

10 (24.4%)