TABLE 3.
Comparison of Characteristics Among Patients Who Underwent Breast Biopsy in the University of North Carolina‐Based Carolina Mammography Registry Before and After Onset of the Coronavirus Disease 2019 Pandemic: January 1, 2019 Through September 30, 2020
| Characteristic | Time Period | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Pre‐COVID: January 1, 2019 to March 2, 2020 | Phase 1: March 3‐29, 2020 | Phase 2: March 30 to May 21, 2020 | Phase 3: May 22 to September 30, 2020 | ||||||||
| Predicted Mean a | SE | Predicted Mean a | SE | P b | Predicted Mean a | SE | P b | Predicted Mean a | SE | P b | |
| Age, y | 56.01 | 0.35 | 56.24 | 0.36 | .006 | 56.45 | 0.36 | <.001 | 56.82 | 0.35 | <.001 |
| Characteristic | No. | Predicted Probability (95% CI) a | No. | Predicted Probability (95% CI) a | P b | No. | Predicted Probability (95% CI) a | P b | No. | Predicted Probability (95% CI) a | P b |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Race/ethnicity | |||||||||||
| Non‐Hispanic White | 907 | 56 (53‐59) | 63 | 57 (45‐68) | .87 | 48 | 60 (46‐73) | .78 | 231 | 61 (55‐68) | .38 |
| Non‐Hispanic Black | 638 | 38 (35‐42) | 43 | 40 (29‐53) | .78 | 39 | 35 (23‐49) | .78 | 144 | 34 (28‐41) | .73 |
| Other | 80 | 4 (3‐6) | 3 | 3 (1‐8) | .50 | 3 | 3 (1‐10) | .50 | 13 | 3 (2‐6) | .50 |
| Unknown | 68 | 2 | 5 | 34 | |||||||
| Family history of breast cancer | |||||||||||
| No | 919 | 79 (76‐81) | 65 | 78 (66‐87) | .97 | 38 | 77 (60‐88) | .97 | 208 | 75 (68‐81) | .98 |
| Yes | 266 | 22 (19‐24) | 20 | 22 (13‐34) | 12 | 23 (12‐40) | 75 | 25 (19‐31) | |||
| Unknown | 508 | 26 | 45 | 139 | |||||||
| Area of residence | |||||||||||
| Urban | 1358 | 81 (79‐84) | 86 | 79 (68‐87) | .55 | 80 | 85 (75‐92) | .55 | 324 | 79 (74‐84) | .55 |
| Rural | 335 | 19 (16‐21) | 25 | 21 (14‐32) | 15 | 15 (8‐25) | 98 | 21 (16‐26) | |||
| Health insurance coverage | |||||||||||
| Private insurance | 801 | 48 (45‐50) | 46 | 42 (32‐52) | .27 | 32 | 34 (24‐45) | .056 | 173 | 41 (36‐47) | .056 |
| Medicare | 518 | 31 (28‐33) | 29 | 26 (18‐36) | .34 | 24 | 25 (17‐36) | .34 | 116 | 28 (23‐32) | .34 |
| Medicaid | 86 | 5 (4‐6) | 4 | 3 (1‐9) | .76 | 4 | 4 (1‐11) | .76 | 18 | 4 (2‐7) | .76 |
| None reported | 288 | 17 (15‐19) | 32 | 29 (21‐38) | .0042 | 35 | 37 (27‐47) | <.001 | 115 | 27 (23‐32) | <.001 |
Abbreviations: COVID‐19, coronavirus disease 2019; SE, standard error.
a
Predicted means and probabilities were estimated using a least squares random effects model to adjust for within‐woman clustering.
b
P values compare predicted means or probabilities in the pre‐COVID column with the predicted means or probabilities in the columns for phases 1 through 3.