Table 3.
Unadjusted associations of the Omega-3 Index and demographic variables with death.
| Risk factor | Death% (x/N) | Unadjusted Models | ||
|---|---|---|---|---|
| OR (95% CI)a | Firth's test P-valuea | F-test P-valueb | ||
| Female | 14.6% (6/41) | 1.00 | ||
| Male | 13.6% (8/59) | 0.90 (0.30, 2.83) | 0.85 | 0.88 |
| Age | ||||
| Per decade | – | 1.33 (0.92, 2.08) | 0.14 | 0.13 |
| DNR | ||||
| Yes | 34.2% (13/38) | 21.76 (4.90, 206.44) | <0.0001 | 0.001 |
| No | 1.6% (1/62) | |||
| Categorical by O3I Quartile | Overall model F-test | 0.047 | 0.03 | |
| Q1 (O3I<4.0%) | 12.0% (3/25) | 1.00 | ||
| Q2 (4.0%<O3I<4.7%) | 8.0% (2/25) | 0.68 (0.11, 3.86) | 0.66 | 0.64 |
| Q3 (4.7<O3I<5.7%) | 32.0% (8/25) | 3.13 (0.82, 14.30) | 0.10 | 0.10 |
| Q4 (O3I≥5.7%) | 4.0% (1/25) | 0.39 (0.04, 2.61) | 0.34 | 0.32 |
| Comparing O3I Q4 vs Q1–3 | ||||
| Q1–3: O3I<5.7% | 17.3% (13/75) | 1.00 | ||
| Q4: O3I≥5.7% | 4.0% (1/25) | 0.28 (0.03, 1.26) | 0.11 | 0.13 |
Bold and italics is used for p-values less than the significance level of 0.05.
a
Using the Firth's modified score procedure for small sample sizes.
b
Standard F-test from Logistic Regression ignoring small sample sizes.