Table 1. Initial presenting condition of patients.
Test statistic | |||||
Feature | Controls | Combination therapy | t | χ2 | P |
no. of patients | |||||
Enrolled | 34 | 35 | |||
Male | 19 | 17 | 0.369 | 0.543 | |
Presenting with: | |||||
Headache | 32 | 32 | 0.000 | 1.000 | |
Vomiting | 12 | 10 | 0.359 | 0.549 | |
Stiff neck | 29 | 28 | 0.336 | 0.562 | |
Fever (⩾37.5°C) | 4 | 3 | 0.002 | 0.968 | |
Skin paresthesia | 23 | 24 | 0.007 | 0.934 | |
Blurred vision or photophobia | 6 | 4 | 0.153 | 0.695 | |
age (years) | |||||
Mean and (s.d.) | 37.50 (8.51) | 35.66 (9.71) | 0.838 | 0.405 | |
Range | 23–57 | 18–55 | |||
Mean (s.d.) incubation period (days)* | 12.06 (7.22) | 14.94 (8.55) | 1.512 | 0.135 | |
Mean (s.d.) duration of headache before presentation | 24.88 (13.32) | 20.71 (10.40) | 1.451 | 0.151 |
*The time between the day when infection is presumed to have occurred and the onset of systems.