Table 1.
Demographic characteristics of the Clalit-Booster study participants
| Overall | Three doses | Four doses | p | |
|---|---|---|---|---|
| N | 607 | 365 | 242 | |
| Sex, Male (%) | 170 (28.0) | 68 (18.7) | 102 (42.0) | <0.001 |
| Age (mean (SD)) | 47.25 (11.43) | 46.42 (10.95) | 48.49 (12.04) | 0.029 |
| Age group (%) | 0.002 | |||
| 18–34 | 86 (14.1) | 52 (14.2) | 34 (14.0) | |
| 35–49 | 247 (40.6) | 156 (42.7) | 91 (37.4) | |
| 50–64 | 235 (38.8) | 145 (39.7) | 90 (37.4) | |
| 65+ | 39 (6.4) | 12 (3.3) | 27 (11.1) | |
| Socioeconomic status (%) | 0.112 | |||
| Very High | 106 (17.5) | 52 (14.3) | 54 (22.2) | |
| High | 243 (40.1) | 149 (41.0) | 94 (38.7) | |
| Medium | 186 (30.9) | 118 (32.5) | 68 (28.4) | |
| Low | 55 (9.1) | 33 (9.1) | 22 (9.1) | |
| Very Low | 4 (0.7) | 4 (1.1) | 0 (0.0) | |
| No data | 11 (1.8) | 7 (1.9) | 4 (1.6) | |
| Occupation (%) | <0.001 | |||
| Physician | 155 (25.5) | 68 (18.6) | 87 (35.8) | |
| Nurse | 159 (26.3) | 105 (28.8) | 54 (22.6) | |
| Administration and support staff | 293 (48.2) | 192 (52.6) | 101 (41.6) | |
| Medical Center (%) | <0.001 | |||
| Carmel | 86 (14.1) | 50 (13.7) | 36 (14.8) | |
| Ha’emek | 126 (20.7) | 114 (31.2) | 12 (4.9) | |
| Meir | 54 (8.9) | 40 (11.0) | 14 (5.8) | |
| Soroka | 341 (56.2) | 161 (44.1) | 180 (74.5) | |
| Days since third dose (median [IQR]) | 147.00 [140.00, 155.00] | 151.00 [139.00, 157.00] | 146.00 [142.50, 150.00] | 0.004 |
| PCR test count (median [IQR]) | 2.00 [1.00, 4.00] | 2.00 [1.00, 4.00] | 2.00 [0.50, 3.00] | 0.34 |