Table 1. Characteristics of Participants and Univariate Analysis.

From: Self-rated Health and Related Factors before and during the COVID-19 Outbreak in Japan

Variable S-2018 S-2019 S-2020 P1 P2 P3
n, overall 1824 1721 2395
Age, mean SD 56.8, 16.6 56.1, 17.5 56.8, 17.1
n, male (%) 799 (42.8) 759 (44.1) 1032 (43.1) 0.794
n, female (%) 1025 (56.2) 962 (55.9) 1363 (56.9)
Self-rated health (SRH) (%)
Very good 242 (13.3) 201 (11.8) 169 (7.1) <0.001 <0.001
Fairly good 1007 (55.2) 948 (55.5) 1192 (50.4) S-2018 vs. S-2019: 0.926
Neither good nor bad 321 (17.6) 327 (19.1) 567 (24.0) S-2018 vs. S-2020: <0.001
Fairly bad 225 (12.3) 209 (12.2) 369 (15.6) S-2019 vs. S-2020: <0.001
Bad 28 (1.5) 24 (1.4) 67 (2.8)
Subjective economic status (SES) (%)
Very good 190 (10.4) 236 (13.8) 202 (8.5) <0.001 <0.001
Fairly good 684 (37.5) 569 (33.3) 747 (31.6) S-2018 vs. S-2019: 0.855
Neither good nor bad 604 (33.1) 538 (31.5) 758 (32.1) S-2018 vs. S-2020: <0.001
Fairly bad 291 (16.0) 314 (18.4) 516 (21.8) S-2019 vs. S-2020: <0.001
Bad 54 (3.0) 52 (3.0) 141 (6.0)
Healthy behaviors for preventing lifestyle-related diseases (%)
Usually 426 (23.4) 447 (26.2) 280 (11.8) <0.001 <0.001
Often 809 (44.5) 702 (41.1) 1248 (52.8) S-2018 vs. S-2019: 0.647
Rarely 503 (27.6) 448 (26.2) 767 (32.4) S-2018 vs. S-2020: <0.001
Never 79 (4.3) 107 (6.3) 69 (2.9) S-2019 vs. S-2020: <0.001
Do not know 6 (0.3) 5 (0.3) 0 (0.0)
City size of living area
Big cities 90 (4.9) 93 (5.4) 153 (6.5) 0.409 0.136
Medium-sized cities (cities with a population of 200,000 or more) 373 (20.5) 362 (21.2) 489 (20.7)
Medium-sized cities (cities with a population of 100,000 or more) 728 (39.9) 698 (40.8) 970 (41.0)
Small cities (cities with less than 100,000 inhabitants) 455 (25.0) 392 (22.9) 529 (22.4)
Towns and villages 177 (9.7) 164 (9.6) 223 (9.4)
Table 2. The Results from Multivariable Analysis.

From: Self-rated Health and Related Factors before and during the COVID-19 Outbreak in Japan

Self-rated health (SRH)
Variable/category Good/fairly good/
neither good nor bad
Fairly bad/bad Crude OR 95% CI Adjusted OR 95% CI p-value
Subjective economic status (SES)
S-2018 Good/fairly good/neither good nor bad 1319 (72.4%) 159 (8.7%) 3.11 2.33-4.15 3.09 2.30-4.15 <0.001
Fairly bad/bad 251 (13.8%) 94 (5.2%) 1.00 1.00
S-2019 Good/fairly good/neither good nor poor 1203 (70.4%) 140 (8.2%) 2.93 2.18-3.93 2.84 2.11-3.83 <0.001
Fairly bad/bad 273 (16.0%) 93 (5.4%) 1.00 1.00
S-2020 Good/fairly good/neither good nor poor 1505 (63.7%) 202 (8.5%) 4.12 3.32-5.12 4.01 3.17-4.93 <0.001
Fairly bad/bad 423 (17.9%) 234 (9.9%) 1.00 1.00
Healthy behaviors for preventing lifestyle-related diseases
S-2018 Always/often 1080 (59.4%) 155 (8.5%) 1.40 1.06-1.83 1.56 1.16-2.10 0.003
Rarely/never 485 (26.7%) 97 (5.3%) 1.00 1.00
S-2019 Always/often 1004 (58.9%) 145 (8.5%) 1.29 0.97-1.72 1.39 1.02-1.89 0.035
Rarely/never 468 (27.5%) 87 (5.1%) 1.00 1.00
S-2020 Always/often 1301 (55.0%) 227 (9.6%) 1.91 1.55-2.36 2.01 1.56-2.48 <0.001
Rarely/never 627 (26.5%) 209 (8.8%) 1.00 1.00
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