Table 4 Poisson regression model of PTA failure a in the PAD cases for various time periods in Taiwan
Cohort I: PTAs performed during 2000-2001 | Cohort II: PTAs performed during 2004-2005 | Cohort III: PTAs performed during 2008-2009 | ||||
|---|---|---|---|---|---|---|
Descriptive data for both failed patterns | No. | (%) | No. | (%) | No. | (%) |
Enrolled cases | 1,265 | 5,356 | 10,258 | |||
Referred for bypass within 2 years | 92 | 7.27% | 201 | 3.75% | 215 | 2.10% |
Referred for amputation within 2 years | 188 | 14.86% | 437 | 8.16% | 873 | 8.51% |
Period effect b of PTAs Failure (RR, 95% C.I.) | 1.00 | 0.92 | 0.80-1.04 | 0.92 | 0.80-1.06 | |
Analytic data for all PTA failed cases | RR | (95% CI) | RR | (95% CI) | RR | (95% CI) |
Age Stratum | ||||||
30-49.9 y/o | 1.00 | 1.00 | 1.00 | |||
50-64.9 y/o | 3.54 | 1.68 ~ 5.49 | 1.45 | 0.84 ~ 1.85 | 1.10 | 0.73 ~ 1.42 |
65-74.9 y/o | 4.95 | 2.41 ~ 10.13 | 1.54 | 0.82 ~ 1.76 | 1.17 | 0.78 ~ 1.50 |
75 y/o or more | 4.56 | 2.22 ~ 9.36 | 1.63 | 0.83 ~ 1.79 | 0.92 | 0.72 ~ 1.19 |
Gender | ||||||
Male vs female | 0.87 | 0.69 ~ 1.11 | 0.85 | 0.72-0.99 | 1.10 | 0.97 ~ 1.26 |
Co-morbidities (CCI Index) | ||||||
Higher (≥4) vs lower | 1.54 | 0.95 ~ 2.43 | 1.31 | 1.02 ~ 1.67 | 1.46 | 1.20 ~ 1.77 |
Socioeconomic level | ||||||
Low-income vs other | 1.22 | 0.39 ~ 3.82 | 1.39 | 0.74 ~ 2.59 | 0.58 | 0.34 ~ 0.99 |