Table 1. Matched variables in GC drug-use and non-use patient.
| Before matching | After matching | |||||
|---|---|---|---|---|---|---|
| Not used | Used | p | Not used | Used | p | |
| N | 1340 | 139 | 504 | 126 | ||
| Progressed | 77 (28.1) | 104 (74.8) | < 0.001 | 143 (28.4) | 96 (76.2) | < 0.001 |
| Age (mean ± SD), years | 68.34 ± 12.48 | 64.60 ± 12.88 | < 0.001 | 64.82 ± 13.01 | 64.42 ± 12.39 | 0.75 |
| Male gender (N, %) | 528 (39.4) | 59 (42.5) | 0.49 | 214 (42.5) | 51 (40.5) | 0.69 |
| Female gender (N, %) | 812 (60.6) | 80 (57.5.) | 290 (57.5) | 75 (59.5) | ||
| Diabetes (N, %) | 213 (15.9) | 22 (15.8) | 0.98 | 63 (12.5) | 17 (13.5) | 0.76 |
| Hypertensive heart disease (N, %) | 65 (4.9) | 4 (2.9) | 0.29 | 17 (3.4) | 3 (2.4) | 0.57 |
| Kidney disease (N, %) | 58 (4.3) | 6 (4.3) | 0.99 | 16 (3.2) | 5 (4.0) | 0.66 |
| Chronic respiratory conditions (N, %) | 504 (37.6) | 65 (46.8) | 0.03 | 230 (45.6) | 61 (48.4) | 0.58 |
| Metastasis (N, %) | 955 (71.3) | 128 (92.1) | < 0.001 | 461 (91.5) | 115 (91.3) | 0.94 |
| Endotracheal Intubation (N, %) | 31 (2.3) | 19 (13.7) | < 0.001 | 16 (3.2) | 6 (4.8) | 0.39 |
Data are number of patients (%), unless otherwise stated. Diabetes, ICD-9-CM 250; hypertensive heart disease, ICD-9-CM 402–404; kidney disease, ICD-9-CM 580–588; chronic respiratory conditions (including chronic obstructive pulmonary disease, asthma, and bronchitis), ICD-9-CM 490–519; metastasis, ICD-9-CM-196-198. endotracheal intubation, NHI operation code 47031C.