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. 2021 Feb 6;7(5):100667. doi: 10.1016/j.adro.2021.100667

Table 4.

Chi-square analysis with Yates correction for categorized variables

Categorization Frequency (%) χ2 P value Contingency
Patients diagnosed COVID-19 No patients diagnosed COVID-19
Less than 100 new cases/mo 50 (50.5) 49 (49.5)
100 new cases or more/mo 16 (59.3) 11 (40.7)
Total 66 (52.4) 60 (47.6) 0.348 .555 0.052
Patients diagnosed COVID-19 No patients diagnosed COVID-19
Not predominantly SUS 34 (65.4) 18 (34.6)
Predominantly SUS 32 (43.2) 42 (56.8)
Total 66 (52.4) 60 (47.6) 5.147 .023 0.198
Employee diagnosed with COVID-19 No employee diagnosed with COVID-19
Less than 100 new cases/mo 51 (51.5) 48 (48.5)
100 new cases or more/mo 16 (59.3) 11 (40.7)
Total 67 (53.2) 59 (46.8) 0.247 .619 0.044
Employee diagnosed with COVID-19 No employee diagnosed with COVID-19
Not predominantly SUS 34 (65.4) 18 (34.6)
Predominantly SUS 33 (44.6) 41 (55.4)
Total 67 (53.2) 59 (46.8) 4.499 .033 0.186
Drop in care above 20% No drop in care above 20%
Less than 100 new cases/mo 63 (63.6) 36 (36.4)
100 new cases or more/mo 14 (51.9) 13 (48.1)
Total 77 (61.1) 49 (38.9) 0.793 .373 0.079
Drop in care above 20% No drop in care above 20%
Not predominantly SUS 32 (61.5) 20 (38.5)
Predominantly SUS 45 (60.8) 29 (39.2)
Total 77 (61.1) 49 (38.9) 0.010 .917 0.009
Indication of hypofractionation No indication of hypofractionation
Less than 100 new cases/mo 78 (78.8) 21 (21.2)
100 new cases or more/mo 20 (74.1) 7 (25.9)
Total 98 (77.8) 28 (22.2) 0.068 .794 0.023
Indication of hypofractionation No indication of hypofractionation
Not predominantly SUS 43 (82.7) 9 (17.3)
Predominantly SUS 55 (74.3) 19 (25,7)
Total 98 (77.8) 28 (22.2) 0.800 .370 0.079
Team rotation No team rotation
Less than 100 new cases/mo 36 (36.4) 63 (63.6)
100 new cases or more/mo 8 (29.6) 19 (70.4)
Total 44 (34.9) 82 (65.1) 0.179 .672 0.037
Team rotation No team rotation
Not predominantly SUS 20 (38.5) 32 (61.5)
Predominantly SUS 24 (32.4) 50 (67.6)
Total 44 (34.9) 82 (65.1) 0.259 .610 0.045

Abbreviation: SUS = Unified Health System.

The binomial variables of the χ2 analysis are presented in a 2 × 2 table, with number of patients and percentage (compared with overall number of patients) in each of the 4 squares, the row and column total count and percentage (compared with overall number of patients), and the P value for each analysis.