Table 1.
Characteristics of the Training and Validation Set in Community-Acquired Pneumonia Patients with Type 2 Diabetes
| Variables | All (N=531) |
Training Set (N=359) |
Validation Set (N=172) |
t or χ2 | P | |
|---|---|---|---|---|---|---|
| Sex (males/females) | 305/226 | 212/147 | 93/79 | 1.181 | 0.277 | |
| Age (years) | 71.7±11.7 | 72.0±11.6 | 71.1±11.9 | 0.826 | 0.409 | |
| Ethnicity [n(%)] | Han | 509(95.9) | 342(95.3) | 167(97.1) | 2.879 | 0.237 |
| Other | 15(2.8) | 13(3.6) | 2(1.2) | |||
| Unknown | 7(1.3) | 4(1.1) | 3(1.7) | |||
| Confusion [n(%)] | 63(11.9) | 43(12.0) | 20(11.6) | 0.014 | 0.907 | |
| Temperature (°C) | 36.9±0.8 | 36.9±0.8 | 36.9±0.8 | 0.390 | 0.697 | |
| Respiratory rate (/min) | 21.1±3.7 | 21.2±3.8 | 20.8±3.4 | 0.899 | 0.369 | |
| Pulse (/min) | 89.7±18.2 | 90.7±18.5 | 87.6±17.4 | 1.851 | 0.065 | |
| SBP (mmHg) | 135.8±24.7 | 134.9±24.3 | 137.6±25.5 | 1.168 | 0.243 | |
| DBP (mmHg) | 77.5±13.8 | 77.0±12.7 | 78.4±15.9 | 1.103 | 0.271 | |
| Urea (mmol/L) | 8.19±5.85 | 8.20±5.79 | 8.16±5.98 | 0.075 | 0.940 | |
| Sodium (mmol/L) | 137.1±6.6 | 137.1±6.7 | 137.1±6.3 | 0.081 | 0.935 | |
| Glucose (mmol/L) | 10.8±5.0 | 10.9±5.2 | 10.5±4.5 | 0.815 | 0.415 | |
| Hematocrit (%) | 35.9±6.7 | 36.1±6.7 | 35.5±6.7 | 1.002 | 0.317 | |
| Albumin (g/L) | 34.2±5.2 | 34.5±5.1 | 33.7±5.5 | 1.683 | 0.093 | |
| CURB-65 Score | 1.42±0.99 | 1.44±0.98 | 1.37±1.01 | 0.744 | 0.457 | |
| PSI Score | 96.5±29.5 | 96.9±29.5 | 95.5±29.6 | 0.524 | 0.600 | |
| Death [n(%)] | 47(8.9) | 34(9.5) | 13(7.6) | 0.527 | 0.468 |
Abbreviations: SBP, systolic blood pressure; DBP, diastolic blood pressure; PSI, Pneumonia Severity Index.