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Table 1 Diagnosis rates and median length of stay for hospital-based diagnoses of HZ, Denmark, 1994–2012

From: Hospital-based herpes zoster diagnoses in Denmark: rate, patient characteristics, and all-cause mortality

Age (years) Overall Women Men Median length of stay (interquartile range), daysb
Number Person-time Ratea Number Person-time Ratea Number Person-time Ratea
0–9 492 12,580,957 3.9 234 6,132,651 3.8 258 6,448,306 4.0 1 (0–3)
10–19 368 12,030,773 3.1 195 5,867,909 3.3 173 6,162,864 2.8 3 (1–6)
20–29 623 13,126,461 4.7 303 6,473,069 4.7 320 6,653,392 4.8 3 (1–6)
30–39 772 14,872,135 5.2 379 7,319,246 5.2 393 7,552,889 5.2 2 (1–5)
40–49 885 14,732,844 6.0 440 7,263,028 6.1 445 7,469,816 6.0 3 (1–6)
50–59 1650 13,516,050 12.2 899 6,726,066 13.4 751 6,789,984 11.1 3 (1–7)
60–69 2357 10,420,187 22.6 1246 5,344,994 23.3 1111 5,075,193 21.9 3 (1–7)
70–79 3094 6,931,652 44.6 1798 3,866,840 46.5 1296 3,064,812 42.3 4 (1–9)
80–89 2859 3,495,850 81.8 1914 2,252,297 85.0 945 1,243,553 76.0 6 (1–11)
≥90 563 617,841 91.1 415 467,360 88.8 148 150,481 98.4 5 (2–10)
Total 13,663 102,324,750 13.4 7823 51,713,460 15.1 5840 50,611,290 11.5 4 (1–8)
Age-standardizedc    13.1 (12.9–13.3)    13.6 (13.3–13.9)    12.5 (12.2–12.9)  
  1. Abbreviations: HZ herpes zoster
  2. aPer 100,000 person-years
  3. bFor inpatient primary diagnoses only
  4. cDirectly standardized to the age distribution in the 2000 Danish Census using the following weights: 0.13 for 0–9 years, 0.11 for 10–19 years, 0.14 for 20–29 years, 0.15 for 30–39 years, 0.14 for 40–49 years, 0.14 for 50–59 years, 0.09 for 60–69 years, 0.07 for 70–79 years, 0.03 for 80–89 years, and 0.01 for ≥90 years