Table 3. Comparison of baseline characteristics of patients from both cohorts.
| Observations | Derivation Cohort (n = 134) |
Validation Cohort (n = 42) |
x2 or Kruskal Wallis |
|---|---|---|---|
| Year of recruitment | 2016–2017 | 2015 | |
| Disease duration (days) | 4 (2–6) | 4 (2–6) | 0.577 |
| Patient characteristics | |||
| Age (years) | 38.0 (26–55)* | 39.0 (28.5–47) | 0.778 |
| Sex (Female) | 59.7% (80) | 61.9% (26) | 0.799 |
| Fever | 96.3% (129) | 92.9% (39) | 0.355 |
| Myalgia | 87.3% (117) | 92.9% (39) | 0.319 |
| Arthralgia | 100% (134) | 100% (42) | 1 |
| Edema | 68.7% (92) | 81.0% (34) | 0.124 |
| MPCR | 58.2% (78) | 81.0% (34) | 0.0075 |
| Pruritus | 52.2% (70) | 61.9% (26) | 0.272 |
| Headache | 88.0% (118) | 81.0% (34) | 0.250 |
| ROP | 62.7% (84) | 64.3% (27) | 0.851 |
| Vomits/Nausea | 68.4% (91) | 54.8% (23) | 0.107 |
| Hypertension | 18.7% (25) * | 16.7%(7) | 0.770 |
| Arthralgia persistence | 60.7% (65/107)& | 50.0%(17/34) + | 0.272 |
*n = 132
MPCR = Maculopapular cutaneous rash
ROP = Retro-Orbital Pain