Table 2. Patient characteristics categorized by age.
| Age groups a | Total | p | ||||
|---|---|---|---|---|---|---|
| <65 | 65≦<75 | 75≦ | ||||
| (N = 1472) | (N = 1279) | (N = 961) | (N = 3712) | |||
| Gender | ||||||
| Male | (%) | 762(51.8) | 709(55.4) | 491(51.1) | 1962(52.9) | 0.07 |
| Female | (%) | 710(48.2) | 570(44.6) | 470(48.9) | 1750(47.1) | |
| District | ||||||
| Kyushu | (%) | 753(51.2) | 759(59.3) | 669(69.6) | 2181(58.8) | <0.001 |
| Other than Kyushu | (%) | 719(48.8) | 520(40.7) | 292(30.4) | 1531(41.2) | |
| Years | ||||||
| 2007 | (%) | 444(30.2) | 325(25.4) | 237(24.7) | 1006(27.1) | 0.008 |
| 2008 | (%) | 335(22.8) | 278(21.7) | 233(24.2) | 846(22.8) | |
| 2009 | (%) | 286(19.4) | 307(24.0) | 216(22.5) | 809(21.8) | |
| 2010 | (%) | 407(27.6) | 369(28.9) | 275(28.6) | 1051(28.3) | |
| Admission course | ||||||
| Planned | (%) | 1133(77.0) | 1005(78.6) | 608(63.3) | 2670(71.9) | <0.001 |
| Urgent | (%) | 339(23.0) | 350(27.4) | 353(36.7) | 1042(28.1) | |
| Comorbidities | ||||||
| AIDS | (%) | 2(0.1) | 1(0.1) | 0(0.0) | 3(0.1) | 0.514 |
| Cardiovascular disease | (%) | 75(5.1) | 104(8.1) | 99(10.3) | 278(7.5) | <0.001 |
| Cerebrovascular disease | (%) | 19(1.3) | 40(3.1) | 45(4.7) | 104(2.8) | <0.001 |
| Mild diabetes | (%) | 128(8.7) | 142(11.1) | 92(9.6) | 362(9.8) | 0.103 |
| Diabetes with complication | (%) | 14(1.0) | 8(0.6) | 11(1.1) | 33(0.9) | 0.41 |
| Liver disease | (%) | 15(1.0) | 20(1.6) | 11(1.1) | 46(1.2) | 0.416 |
| Primary malignancy | (%) | 60(4.1) | 69(5.4) | 62(6.5) | 191(5.1) | 0.031 |
| Metastatic malignancy | (%) | 77(5.2) | 53(4.1) | 43(4.5) | 173(4.7) | 0.383 |
| Renal disease | (%) | 10(0.7) | 37(2.9) | 19(2.0) | 66(1.8) | <0.001 |
| Other clinical events | ||||||
| Sepsis | (%) | 78(5.3) | 71(5.6) | 47(4.9) | 196(5.3) | 0.787 |
| Hypercalcemia | (%) | 144(9.8) | 150(11.7) | 102(10.6) | 396(10.7) | 0.256 |
| Hypoalbminemia | (%) | 18(1.2) | 19(1.5) | 14(1.5) | 51(1.4) | 0.813 |
| Treatments | ||||||
| Intravenous chemotherapy | ||||||
| Single agent | (%) | 89(6.0) | 50(3.9) | 31(3.2) | 170(4.6) | 0.002 |
| Multiple agent | (%) | 1027(69.8) | 909(71.1) | 501(52.1) | 2437(65.7) | <0.001 |
| Peroral chemotherapy | (%) | 141(9.6) | 222(17.4) | 163(17.0) | 526(14.2) | <0.001 |
| Oppotunistic infections | ||||||
| Aspergillus | (%) | 40(2.7) | 24(1.9) | 17(1.8) | 81(2.2) | 0.192 |
| Candida | (%) | 164(11.1) | 162(12.7) | 81(8.4) | 407(11.0) | 0.006 |
| Cytomegalovirus | (%) | 36(2.4) | 49(3.8) | 24(2.5) | 109(2.9) | 0.064 |
| Herpes simplex virus | (%) | 32(2.2) | 14(1.1) | 7(0.7) | 53(1.4) | 0.006 |
| Pneumocystis pneumonia | (%) | 212(14.4) | 185(14.5) | 111(11.6) | 508(13.7) | 0.082 |
| Tuberculosis | (%) | 36(2.4) | 51(4.0) | 53(5.5) | 140(3.8) | <0.001 |
| Varicella zoster virus | (%) | 52(3.5) | 49(3.8) | 17(1.8) | 118(3.2) | 0.014 |
| Other organism | (%) | 10(0.7) | 5(0.4) | 7(0.7) | 22(0.6) | 0.504 |
| Outcome | ||||||
| In-hospital mortality | (%) | 238(16.2) | 287(22.4) | 286(29.8) | 811(21.8) | <0.001 |
| Care resource uses | ||||||
| LOS median | (IQR) | 30(37.0) | 29(41.0) | 24(34.0) | 28(38.0) | 0.001 b |
| TC median (dollar) | (IQR) | 11385.3(16673.0) | 10467.8(16952.6) | 8705.0(11391.2) | 10297.9(15219.7) | <0.001 b |
AIDS: Acquired immunodeficiency syndrome; IQR: Interquartile range, LOS: Length of stay, TC: Total charge.
a Median age (interquartile range): 68 (15)
b Kruskal-Wallis test, all others by chi-square test