Table 1.
Characteristics of study at the baseline.
| Chlamydia pneumoniae | With | Without | p | ||
|---|---|---|---|---|---|
| Variables | n | % | n | % | |
| Total | 1,657 | 25.00 | 4,971 | 75.00 | |
| Gender | 0.999 | ||||
| Male | 1,002 | 60.47 | 3,006 | 60.47 | |
| Female | 655 | 39.53 | 1,965 | 39.53 | |
| Age (years) | 65.53 ± 10.13 | 65.71 ± 9.17 | 0.495 | ||
| Age groups (years) | 0.999 | ||||
| 50-64 | 809 | 48.82 | 2,427 | 48.82 | |
| ≥65 | 848 | 51.18 | 2,544 | 51.18 | |
| Marital status | 0.681 | ||||
| Without | 809 | 48.82 | 2,456 | 49.41 | |
| With | 848 | 51.18 | 2,515 | 50.59 | |
| Education (years) | 0.977 | ||||
| <12 | 892 | 53.83 | 2,674 | 53.79 | |
| ≥12 | 765 | 46.17 | 2,297 | 46.21 | |
| Insured premium (NT$) | <0.001 | ||||
| <18,000 | 1,607 | 96.98 | 4,926 | 99.09 | |
| 18,000-34,999 | 41 | 2.47 | 43 | 0.87 | |
| ≥35,000 | 9 | 0.54 | 2 | 0.04 | |
| Diabetes mellitus | 275 | 16.60 | 838 | 16.86 | 0.820 |
| Hypertension | 416 | 25.11 | 988 | 19.88 | <0.001 |
| Hyperlipidemia | 77 | 4.65 | 171 | 3.44 | 0.030 |
| Coronary artery disease | 178 | 10.74 | 587 | 11.81 | 0.249 |
| Obesity | 0 | 0.00 | 2 | 0.04 | 0.414 |
| Cancer | 122 | 7.36 | 400 | 8.05 | 0.400 |
| Pneumonia | 252 | 15.21 | 541 | 10.88 | <0.001 |
| Depression | 11 | 0.66 | 24 | 0.48 | 0.433 |
| Bipolar | 3 | 0.18 | 9 | 0.18 | 0.999 |
| Anxiety | 465 | 28.06 | 1,230 | 24.74 | 0.008 |
| Alcohol use disorder | 9 | 0.54 | 15 | 0.30 | 0.160 |
| Substance use disorder | 1 | 0.06 | 2 | 0.04 | 0.739 |
| Sleep disorder | 20 | 1.21 | 19 | 0.38 | 0.001 |
| Other Chlamydiae infections or diseases | 1 | 0.06 | 0 | 0.00 | 0.250 |
| CCI_R | <0.001 | ||||
| 0 | 1,067 | 64.39 | 3,199 | 64.35 | |
| 1 | 440 | 26.55 | 1,126 | 22.65 | |
| 2 | 105 | 6.34 | 414 | 8.33 | |
| 3 | 28 | 1.69 | 153 | 3.08 | |
| ≥4 | 17 | 1.03 | 79 | 1.59 | |
| Season | 0.172 | ||||
| Spring (Mar–May) | 453 | 27.34 | 1,287 | 25.89 | |
| Summer (Jun–Aug) | 395 | 23.84 | 1,127 | 22.67 | |
| Autumn (Sep–Nov) | 363 | 21.91 | 1,082 | 21.77 | |
| Winter (Dec–Feb) | 446 | 26.92 | 1,475 | 29.67 | |
| Location | <0.001 | ||||
| Northern Taiwan | 742 | 44.78 | 1,850 | 37.22 | |
| Middle Taiwan | 458 | 27.64 | 1,413 | 28.42 | |
| Southern Taiwan | 287 | 17.32 | 1,325 | 26.65 | |
| Eastern Taiwan | 167 | 10.08 | 352 | 7.08 | |
| Outlets islands | 3 | 0.18 | 31 | 0.62 | |
| Urbanization level | <0.001 | ||||
| 1 (The highest) | 570 | 34.40 | 1,549 | 31.16 | |
| 2 | 844 | 50.94 | 2,188 | 44.02 | |
| 3 | 84 | 5.07 | 346 | 6.96 | |
| 4 (The lowest) | 159 | 9.60 | 888 | 17.86 | |
| Level of care | <0.001 | ||||
| Hospital center | 591 | 35.67 | 1,542 | 31.02 | |
| Regional hospital | 749 | 45.20 | 1,573 | 31.64 | |
| Local hospital | 317 | 19.13 | 1,856 | 37.34 | |
CCI_R: Charlson Comorbidity Index, dementia removed; P: Chi-square/Fisher exact test on category variables and t-test on continue variables.