Table 2.
Summary of permutation test on the proportion of individuals with decreased contacts and paired mean difference before and after restrictions
| Comparison with proportion decreased | ||||||||
| Restriction | Contacts | N | Adults | Children | Decreased | Same | Increased | P value |
| Local | exclude work and school | 572 | 434 | 138 | 197 (34.4%) | 252 (44.1%) | 123 (21.5%) | < 0.001 |
| ROS | exclude work and school | 3884 | 3258 | 626 | 1314 (33.8%) | 1573 (40.5%) | 997 (25.7%) | < 0.001 |
| 10 pm | other | 3887 | 3160 | 727 | 990 (25.5%) | 2054 (52.8%) | 843 (21.7%) | < 0.001 |
| WFH | work | 1408 | 1408 | 0 | 288 (20.5%) | 933 (66.3%) | 187 (13.3%) | < 0.001 |
| T1 entry | exclude work and school | 2415 | 1955 | 460 | 752 (31.1%) | 993 (41.1%) | 670 (27.7%) | 0.017 |
| T2 entry | exclude work and school | 1654 | 1338 | 316 | 468 (28.3%) | 823 (49.8%) | 363 (21.9%) | < 0.001 |
| T3 entry | exclude work and school | 368 | 267 | 101 | 103 (28.0%) | 188 (51.1%) | 77 (20.9%) | 0.034 |
| T1 exit to LD | exclude school | 2095 | 1764 | 331 | 750 (35.8%) | 955 (45.6%) | 390 (18.6%) | < 0.001 |
| T2 exit to LD | exclude school | 1455 | 1212 | 243 | 428 (29.4%) | 732 (50.3%) | 295 (20.3%) | < 0.001 |
| T3 exit to LD | exclude school | 323 | 236 | 87 | 85 (26.3%) | 173 (53.6%) | 65 (20.1%) | 0.062 |
| Comparison in mean difference | Median (IQR) | Mean | ||||||
| Restriction | Contacts | Before | After | Before | After | Difference (95% CI) | P value | |
| Local | Exclude work and school | 2 (1 to 4) | 2 (1 to 3) | 3.18 | 2.49 | − 0.69 (− 1.25 to − 0.17) | 0.004 | |
| ROS | Exclude work and school | 2 (1 to 3) | 2 (1 to 3) | 2.9 | 2.66 | − 0.25 (− 0.5 to − 0.01) | 0.045 | |
| 10 pm | Other | 0 (0 to 1) | 0 (0 to 1) | 1.37 | 1.38 | 0.01 (− 0.23 to 0.23) | 0.915 | |
| WFH | Work | 0 (0 to 1) | 0 (0 to 0) | 4.62 | 3.62 | − 0.99 (− 1.94 to − 0.03) | 0.042 | |
| T1 entry | Exclude work and school | 2 (1 to 3) | 2 (1 to 3) | 2.79 | 2.66 | − 0.13 (− 0.39 to 0.11) | 0.305 | |
| T2 entry | Exclude work and school | 2 (1 to 3) | 2 (1 to 3) | 2.42 | 2.56 | 0.14 (− 0.17 to 0.55) | 0.473 | |
| T3 entry | Exclude work and school | 2 (1 to 3) | 2 (1 to 3) | 3.09 | 2.32 | − 0.77 (− 1.97 to − 0.03) | 0.067 | |
| T1 exit to LD | Exclude school | 2 (1 to 4) | 2 (1 to 3) | 4.21 | 2.81 | − 1.40 (− 2.03 to − 0.85) | < 0.001 | |
| T2 exit to LD | Exclude school | 2 (1 to 3) | 1 (1 to 3) | 3.4 | 2.97 | − 0.42 (− 1.13 to 0.33) | 0.247 | |
| T3 exit to LD | Exclude school | 2 (1 to 3) | 2 (1 to 3) | 3.08 | 3.54 | 0.46 (− 0.28 to 1.41) | 0.343 | |
Two-sided p value calculated by counting the number of permutations where the magnitude of the test statistics is greater than the observed test statistics, and dividing by the number of permutations
ROS Rule of Six, WFH encouraged to work from home, LD lockdown, T1 Tier 1, T2 Tier 2, T3 Tier 3, IQR inter-quartile range