Table 2. Comparison of presentation pattern in a diabetic and non-diabetic population.
| Annual fold increase | Seasonality |
Volume in weekends (fold difference vs. weekdays) | ||||
|---|---|---|---|---|---|---|
| P value for seasonality | Peak-to-trough ratio | Peak month | ||||
| Diabetes | ACS | 6.0% [5.8 to 6.3%] (Ref) |
< 0.001 | 1.24 [1.23 to 1.26] (Ref) |
1.53 [1.42 to 1.64] (Ref) |
38.8% [38.4 to 39.3%] (Ref) |
| SA | 4.8% [4.6 to 5.1%] (P < 0.001) |
0.056 | --- | --- | 3.6% [3.5 to 3.7%] (P < 0.001) |
|
| CLI | 22.5% [21.5 to 23.4%] (P < 0.001) |
< 0.001 | 1.79 [1.73 to 1.85] (P < 0.001) |
2.94 [2.83 to 3.06] (P < 0.001) |
3.7% [3.3 to 4.0%] (P < 0.001) |
|
| IC | 14.6% [13.9 to 15.3%] (P < 0.001) |
0.38 | --- | --- | 2.4% [2.2 to 2.6%] (P < 0.001) |
|
| Non-diabetes | ACS | 5.0% [4.8 to 5.2%] (Ref) |
< 0.001 | 1.19 [1.18 to 1.20] (Ref) |
1.31 [1.20 to 1.42] (Ref) |
46.6% [46.2 to 47.0%] (Ref) |
| SA | 3.8% [3.5 to 4.0%] (P < 0.001) |
0.15 | --- | --- | 4.1% [4.0 to 4.2%] (P < 0.001) |
|
| CLI | 22.4% [21.1 to 23.6%] (P < 0.001) |
< 0.001 | 1.73 [1.65 to 1.81] (P < 0.001) |
2.33 [2.16 to 2.49] (P < 0.001) |
4.4% [3.9 to 4.9%] (P < 0.001) |
|
| IC | 12.6% [11.8 to 13.4%] (P < 0.001) |
0.26 | --- | --- | 2.8% [2.6 to 3.1%] (P < 0.001) |
|
Data represent estimates and 95% CIs. P values for annual fold increase, peak-to-trough ratio, peak month, and volume on weekends are versus ACS. The month coded as 1 to 12 indicates January to December. ACS, acute coronary syndrome; SA, stable angina; CLI, critical limb ischemia; IC, intermittent claudication.