Table 1. Characteristics of hospitals, prevalence of nosocomial infections and antibiotic use*3.
| Parameter | Year 2016 | Year 2011 | p value |
| Number of hospitals | 218 | 132 | |
| Number of hospital beds: median (IQR) | 305 (185–541) | 359 (183–607) | 0.17*1 |
| Length of hospital stay: median in days (IQR) | 6.3 (5.5–7.3) | 6.6 (6.0–8.0) | <0.01*1 |
| Number of patients | 64 412 | 41 539 | |
| Beds per full-time IPC nurse: median (IQR) | 203 (172–257) | 354 (278–460) | <0.01*1 |
| Beds per full-time IPC doctor: median (IQR) | 817 (513–1562) | 1570 (852–3663) | <0.01*1 |
| Alcohol hand rub consumption in mL per patient day: median (IQR) | 32.5 (25.0–51.4) | 24.5 (17.6–38.1) | <0.01*1 |
| Prevalence of all patients with NI: %, 95% CI | 4.58 [4.42; 4.75] | 5.08 [4.87; 5.29] | <0.01*2 |
| Prevalence of patients with NI acquired during current hospital stay: %, 95% CI | 3.32 [3.18; 3.46] | 3.76 [3.57; 3.94] | <0.01*2 |
| Prevalence of patients with AU: %, 95% CI | 25.9 [25.6; 26.3] | 25.5 [25.1; 26.0] | 0.18*2 |
*1 The Mann-Whitney U test was used to calculate p values.
*2 The two-sided chi-square test was used to calculate the p valuest.
*3 This table contains the data of all participating hospitals.
AU, antibiotic use; CI, confidence interval; NI, nosocomial infection; IPC, infection prevention and control; IQR, interquartile range