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

BMC Infectious Diseases

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

Age (years)	Overall			Women			Men			Median length of stay (interquartile range), days^b
Age (years)	Number	Person-time	Rate^a	Number	Person-time	Rate^a	Number	Person-time	Rate^a	Median length of stay (interquartile range), days^b
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-standardized^c			13.1 (12.9–13.3)			13.6 (13.3–13.9)			12.5 (12.2–12.9)

Abbreviations: HZ herpes zoster
^aPer 100,000 person-years
^bFor inpatient primary diagnoses only
^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

ISSN: 1471-2334