Table 3 Five Year comparison of CTAS Scores, January–May 2016–2020
CTAS Level | Total EMS Calls in 2016 n (%) | Total EMS Calls in 2017 n (%) | Total EMS Calls in 2018 n (%) | Total EMS Calls in 2019 n (%) | Total EMS Calls in 2020 n (%) | Total Calls for Each Level | Proportion of calls in 2020 vs. calls 2016–2019 | Relative Change in Calls | Chi Square Test of Independence (Chi-score, p-value) |
|---|---|---|---|---|---|---|---|---|---|
1 (Resuscitation) | 515 (2.4) | 605 (2.7) | 749 (3.0) | 773 (3.1) | 894 (3.9) | 3536 (3.1) | 4.1% vs. 2.9% | −41% | χ2 (1) = 70.36 p < 0.01* |
2 (Emergent) | 4509 (21.4) | 4491 (20.0) | 4656 (18.8) | 4550 (18.4) | 4261 (18.6) | 22,467 (19.4) | 22.9% vs. 24.3% | 6% | χ2 (1) = 10.90 p = 0.01* |
3 (Urgent) | 10,996 (52.1) | 11,137 (49.7) | 11,513 (46.5) | 11,457 (46.3) | 10,060 (43.9) | 55,163 (47.6) | 78.4% vs. 94.1% | 10% | χ2 (1) = 152.61 p < 0.01* |
4 (Less Urgent) | 1935 (9.2) | 2325 (10.4) | 2953 (11.9) | 2954 (11.9) | 2856 (12.5) | 13,023 (11.2) | 14.3% vs. 12.3% | −17% | χ2 (1) = 43.89 p < 0.01* |
5 (Non-Urgent) | 2091 (9.9) | 2453 (10.9) | 3185 (12.9) | 3181 (12.8) | 2650(11.6) | 13,560 (11.7) | 13.1% vs. 13.3% | −1% | χ2 (1) = 0.069 p = 0.79 |