Table 3. Combinations of risk factors.
| Combinations | Case# (n) | Popularity (%) | CR (%) | Support (%) |
| GLU>8.3 and CL<98 and RR>26 | 12 | 2.1 | 100.0 | 2.1 |
| ALT>40 and LYM>40% and RR>26 and Age<4 yo | 14 | 2.5 | 92.9 | 2.3 |
| GLU>8.3 and CL<98 | 16 | 2.8 | 87.5 | 2.5 |
| GLU>8.3 and WBC>1.2 and RR>26 | 16 | 2.8 | 87.5 | 2.5 |
| GLU>8.3 and RR>26 | 31 | 5.5 | 87.1 | 4.8 |
| GLU>8.3 and LYM>40% and RR>26 | 23 | 4.1 | 87.0 | 3.5 |
| ALT>40 and LYM>40% and RR>26 | 15 | 2.6 | 86.7 | 2.3 |
| GLU>8.3 and WBC>1.2 and RR>26 and Age<4 yo | 15 | 2.6 | 86.7 | 2.3 |
| GLU>8.3 and CL<98 and Age<4 yo | 14 | 2.5 | 85.7 | 2.1 |
| GLU>8.3 and RR>26 and Age<4 yo | 28 | 4.9 | 85.7 | 4.2 |
| GLU>8.3 and WBC>1.2 and LYM>40% and RR>26 | 14 | 2.5 | 85.7 | 2.1 |
| GLU>8.3 and LYM>40% and RR>26 and Age<4 yo | 21 | 3.7 | 85.7 | 3.2 |
| GLU>8.3 and WBC>1.2 and LYM>40% and RR>26 and Age<4 yo | 13 | 2.3 | 84.6 | 1.9 |
| GLU>8.3 and LYM>40% | 31 | 5.5 | 83.9 | 4.6 |
| ALT>40 and RR>26 and Age<4 yo | 24 | 4.2 | 83.3 | 3.5 |
| GLU>8.3 and WBC>1.2 and LYM>40% | 18 | 3.2 | 83.3 | 2.6 |
| CL<98 and WBC>1.2 and LYM>40% and RR>26 | 23 | 4.1 | 82.6 | 3.4 |
| ALT>40 and LYM>40% and Age<4 yo | 17 | 3.0 | 82.4 | 2.5 |
| GLU>8.3 and WBC>1.2 and LYM>40% and Age<4 yo | 17 | 3.0 | 82.4 | 2.5 |
| GLU>8.3 and LYM>40% and Age<4 yo | 28 | 4.9 | 82.1 | 4.1 |
| CL<98 and WBC>1.2 and LYM>40% and RR>26 and Age<4 yo | 22 | 3.9 | 81.8 | 3.2 |
| GLU>8.3 and WBC>1.2 | 21 | 3.7 | 81.0 | 3.0 |
| CL<98 and LYM>40% and RR>26 and Age<4 yo | 73 | 12.9 | 80.8 | 10.4 |
| CL<98 and WBC>1.2 and LYM>40% | 31 | 5.5 | 80.6 | 4.4 |
| ALT>40 and RR>26 | 25 | 4.4 | 80.0 | 3.5 |
| GLU>8.3 and WBC>1.2 and Age<4 yo | 20 | 3.5 | 80.0 | 2.8 |
| GLU>8.3 | 43 | 7.6 | 79.1 | 6.0 |
| CL<98 and WBC>1.2 and LYM>40% and Age<4 yo | 28 | 4.9 | 78.6 | 3.9 |
| ALT>40 and WBC>1.2 | 18 | 3.2 | 77.8 | 2.5 |
| ALT>40 and LYM>40% | 18 | 3.2 | 77.8 | 2.5 |
| LYM>40% and RR>26 and Age<4 yo | 191 | 33.7 | 77.5 | 26.1 |
| WBC>1.2 and LYM>40% and RR>26 and Age<4 yo | 75 | 13.2 | 77.3 | 10.2 |
| ALT>40 and WBC>1.2 and RR>26 | 13 | 2.3 | 76.9 | 1.8 |
| ALT>40 and WBC>1.2 and RR>26 and Age<4 yo | 13 | 2.3 | 76.9 | 1.8 |
| ALT>40 and WBC>1.2 and Age<4 yo | 17 | 3.0 | 76.5 | 2.3 |
| GLU>8.3 and Age<4 yo | 38 | 6.7 | 76.3 | 5.1 |
| CL<98 and LYM>40% and RR>26 | 80 | 14.1 | 76.3 | 10.8 |
| CL<98 and LYM>40% and Age<4 yo | 92 | 16.2 | 76.1 | 12.3 |
| ALT>40 and Age<4 yo | 33 | 5.8 | 75.8 | 4.4 |
| WBC>1.2 and LYM>40% and RR>26 | 82 | 14.5 | 75.6 | 10.9 |
| CL<98 and RR>26 and Age<4 yo | 111 | 19.6 | 73.9 | 14.5 |
| CL<98 and WBC>1.2 and RR>26 | 38 | 6.7 | 73.7 | 4.9 |
| WBC>1.2 and RR>26 and Age<4 yo | 127 | 22.4 | 73.2 | 16.4 |
| LYM>40% and RR>26 | 215 | 37.9 | 73.0 | 27.7 |
| CL<98 and WBC>1.2 and RR>26 and Age<4 yo | 37 | 6.5 | 73.0 | 4.8 |
| WBC>1.2 and RR>26 | 134 | 23.6 | 72.4 | 17.1 |
| ALT>40 | 36 | 6.3 | 72.2 | 4.6 |
| CL<98 and WBC>1.2 | 54 | 9.5 | 72.2 | 6.9 |
| WBC>1.2 and LYM>40% and Age<4 yo | 104 | 18.3 | 72.1 | 13.2 |
| CL<98 and LYM>40% | 111 | 19.6 | 72.1 | 14.1 |
| CL<98 and RR>26 | 119 | 21.0 | 71.4 | 15.0 |
| RR>26 and Age<4 yo | 336 | 59.3 | 71.4 | 42.3 |
| LYM>40% and Age<4 yo | 265 | 46.7 | 71.3 | 33.3 |
| WBC>1.2 and LYM>40% | 118 | 20.8 | 70.3 | 14.6 |
| CL<98 and WBC>1.2 and Age<4 yo | 50 | 8.8 | 70.0 | 6.2 |
RR: respiratory rate (/min), GLU: blood glucose (mmol/L), LYM: percentage of lymphocytes (%), ALT: alanine aminotransferase (U/L), CL: blood chlorine (mmol/L), WBC: white blood cell counts (109/L), CR: Confidence ratio