Crude incidence of hospitalisations due to gastroenteritis by characteristics in mid-age and older adults, the 45 and Up Study
| Characteristics | Population | Cases/person-years | Incidence (95% CI)/1000 person-years | p Value |
|---|---|---|---|---|
| Age group (years) | <0.001 | |||
| 45–54 | 77 669 | 785/332 330 | 2.4 (2.2 to 2.5) | |
| 55–64 | 85 487 | 1347/363 217 | 3.7 (3.5 to 3.9) | |
| 65–74 | 57 678 | 1484/241 404 | 6.1 (5.8 to 6.5) | |
| 75–84 | 36 470 | 1829/145 330 | 12.6 (12.0 to 13.2) | |
| ≥85 | 8136 | 632/28 941 | 21.8 (20.2 to 23.6) | |
| Sex | <0.001 | |||
| Female | 142 313 | 3479/596 317 | 5.8 (5.6 to 6.0) | |
| Male | 123 127 | 2598/514 905 | 5.0 (4.9 to 5.2) | |
| Household income ($A/year) | <0.001 | |||
| <$A20 000 | 52 051 | 1855/214 088 | 8.7 (8.3 to 9.1) | |
| $A20 000–$A29 999 | 25 403 | 655/106 717 | 6.1 (5.7 to 6.6) | |
| $A30 000–$A39 999 | 21 005 | 433/88 693 | 4.9 (4.4 to 5.4) | |
| $A40 000–$A49 999 | 19 156 | 324/80 931 | 4.0 (3.6 to 4.5) | |
| $A50 000–$A69 999 | 27 751 | 397/117 755 | 3.4 (3.1 to 3.7) | |
| $A70 000 or more | 62 605 | 655/263 829 | 2.5 (2.3 to 2.7) | |
| Unknown | 57 469 | 1758/239 205 | 7.4 (7.0 to 7.7) | |
| Region of residence | 0.01 | |||
| Cities | 119 449 | 3012/497 142 | 6.1 (5.8 to 6.3) | |
| Inner regional | 93 299 | 1932/392 057 | 4.9 (4.7 to 5.2) | |
| Outer regional/remote/very remote | 52 692 | 1133/222 023 | 5.1 (4.8 to 5.4) | |
| Total | 265 440 | 6077/1 111 223 | 5.5 (5.3 to 5.6) |