Relationship between COVID-19 management and high job satisfaction in resident physicians
| n | High job satisfaction (%) | aPR* | 95% CI | P value | ||
| Lower limit | Upper limit | |||||
| Prefecture information | ||||||
| Population | ||||||
| Quartile 1 (573 441–1 786 170) | 1513 | 935 (61.8) | 1 (reference) | |||
| Quartile 2 (1 815 865–3 700 305) | 1401 | 865 (61.7) | 1.07 | 0.99 | 1.15 | 0.08 |
| Quartile 3 (5 101 556–7 483 128) | 1507 | 951 (63.1) | 1.10 | 1.01 | 1.20 | 0.01 |
| Quartile 4 (8 839 469–13 515 271) | 1555 | 980 (63.0) | 1.11 | 1.01 | 1.21 | 0.01 |
| High incidence area of COVID-19† | ||||||
| No | 1332 | 859 (64.5) | 1 (reference) | |||
| Yes | 4644 | 2872 (61.8) | 0.88 | 0.81 | 0.95 | <0.001 |
| Hospital information | ||||||
| Type of hospital | ||||||
| Community-based hospital | 4996 | 3181 (63.7) | 1 (reference) | |||
| University branch hospital | 306 | 173 (56.5) | 0.91 | 0.79 | 1.05 | 0.19 |
| University hospital | 674 | 377 (55.9) | 0.91 | 0.83 | 1.01 | 0.05 |
| Category of infectious disease designated medical institution | ||||||
| Designated medical institution for infectious disease | 2487 | 1559 (62.7) | 1 (reference) | |||
| Non-designated medical institution for infectious disease | 3489 | 2172 (62.3) | 1.01 | 0.96 | 1.06 | 0.74 |
| Resident information | ||||||
| Sex | ||||||
| Male | 4064 | 2538 (62.5) | 1 (reference) | |||
| Female | 1912 | 1193 (62.4) | 1.01 | 0.97 | 1.06 | 0.62 |
| Grade | ||||||
| PGY-1 | 3041 | 1806 (59.4) | 1 (reference) | |||
| PGY-2 | 2935 | 1925 (65.6) | 1.11 | 1.07 | 1.15 | <0.001 |
| Emergency department duty | ||||||
| 0 per month | 220 | 132 (60.0) | 1 (reference) | |||
| 1–2 per month | 909 | 524 (57.7) | 0.93 | 0.80 | 1.08 | 0.33 |
| 3–5 per month | 4205 | 2679 (63.7) | 0.99 | 0.86 | 1.14 | 0.89 |
| >6 per month | 611 | 384 (62.9) | 0.95 | 0.81 | 1.11 | 0.52 |
| Unknown | 31 | 12 (38.7) | 0.65 | 0.41 | 1.01 | 0.05 |
| Care of patients with COVID-19 | ||||||
| No experience with care of patients with COVID-19 | 759 | 472 (62.2) | 1 (reference) | |||
| Moderate experience with care of patients with COVID-19 (1–10) | 4273 | 2677 (62.7) | 1.01 | 0.97 | 1.07 | 0.56 |
| Well experience with care of patients with COVID-19 (≥11 patients) | 944 | 582 (61.7) | 1.08 | 0.99 | 1.16 | 0.05 |
| PPE supply status | ||||||
| Sufficient supply | 5017 | 3209 (64.0) | 1 (reference) | |||
| Intermediate supply | 611 | 341 (55.8) | 0.87 | 0.81 | 0.94 | <0.001 |
| Insufficient supply | 348 | 181 (52.0) | 0.80 | 0.72 | 0.90 | <0.001 |
| Duty hour | ||||||
| 0–59 hours per week | 2517 | 1539 (61.1) | 1 (reference) | |||
| 60–79 hours per week | 2264 | 1437 (63.5) | 1.03 | 0.98 | 1.08 | 0.22 |
| >80 hours per week | 1195 | 755 (63.2) | 1.02 | 0.96 | 1.08 | 0.48 |
*Adjusted for all variables listed in the table using the multivariable modified Poisson regression model with cluster-robust variance.
†High incidence area of COVID-19 was defined as prefectures designated as endemic or non-endemic areas by setting the median of the cumulative number of patients with COVID-19 between 1 April 2020 and 31 January 2021 as the cut-off value.
aPR, adjusted prevalence ratio; PGY, postgraduate year; PPE, personal protective equipment.