Table 3.
Summary findings of five Chinese cities
| Variables | Beijing (BJ) | Shanghai (SH) | Chongqing (CQ) | Shenzhen (SZ) | Hong Kong (HK) | p-value |
|---|---|---|---|---|---|---|
| Observation days | 391 | 391 | 391 | 391 | 391 | |
| Physical activity | ||||||
| Total avg. daily step count, mean (±SD) | 6846.0 (478.4) | 6702.5 (463.3) | 7540.1 (507.6) | 7209.4 (402.7) | 9039.6 (429.1) | < 0.001* |
| Males, mean (±SD) | 7594.3 (518.2) | 7465.3 (500.9) | 8079.8 (461.9) | 7862.8 (415.2) | 9635.2 (430.4) | < 0.001* |
| Females, mean (±SD) | 6095.1 (454.1) | 5998.1 (444.3) | 7081.4 (561.2) | 6412.1 (416.4) | 8580.1 (443.4) | < 0.001* |
| Age group 18-64, mean (±SD) | 6850.0 (477.6) | 6707.7 (461.2) | 7535.6 (505.7) | 7208.0 (401.8) | 9047.7 (429.2) | < 0.001* |
| Age group 65+, mean (±SD) | 6505.9 (614.4) | 6385.3 (648.2) | 7899.5 (708.8) | 7485.1 (620.6) | 7966.0 (461.9) | < 0.001* |
| Meteorological | ||||||
| Station ID | 54511 | 58362 | 57516 | 59493 | HKO | |
| Temperature, range | −9.2 to 32.5 | −1.0 to 32.6 | 4.5 to 36.5 | 6.6 to 30.8 | 9.0 to 31.2 | |
| Temp, °C mean (±SD) | 12.7 (12.1) | 17.0 (9.3) | 18.7 (8.4) | 23.0 (5.5) | 23.5 (5.3) | < 0.001* |
| Apparent temp, °C mean (±SD) | 13.5 (12.6) | 18.0 (12.5) | 19.6 (11.1) | 26.0 (8.7) | 26.8 (8.3) | < 0.001* |
| Relative humidity, mean (±SD) | 48.0 (19.2) | 73.4 (12.6) | 75.23 (12.0) | 74.7 (14.0) | 76.2 (10.8) | < 0.001* |
| Rainfall days, non-zero (%) | 58 (14.8) | 140 (35.8) | 173 (44.2) | 122 (31.4) | 226 (57.8) | < 0.001* |
| Rainfall, mean (±SD) | 1.4 (7.3) | 3.7 (11.3) | 3.1 (8.0) | 5.0 (15.3) | 5.5 (16.0) | < 0.001* |
| Windspeed, m/s (±SD) | 2.0 (0.8) | 2.6 (1.0) | 1.3 (0.4) | 1.9 (0.7) | 6.6 (3.0) | < 0.001* |
| Pressure, mean (±SD) | 1013.9 (10.6) | 1016.8 (9.5) | 983.6 (9.2) | 1005.7 (7.0) | 1013.1 (7.0) | < 0.001* |
| Sunshine, mean (±SD) | 6.8 (3.7) | 5.1 (4.2) | 3.1 (4.1) | 5.3 (3.8) | 5.3 (3.9) | < 0.001* |
| Precision variables | ||||||
| AQI, mean (±SD) | 82.7 (48.7) | 64.9 (32.7) | 65.1 (31.5) | 48.3 (17.0) | \ | < 0.001* |
| AQHI, mean (±SD) | \ | \ | \ | \ | 3.5 (1.1) | NA |
| Holiday (%) | 25 (6.4) | 25 (6.4) | 25 (6.4) | 25 (6.4) | 19 (4.9) | 0.863 |
| Extra workdays (%) | 7 (1.8) | 7 (1.8) | 7 (1.8) | 7 (1.8) | 0 (0.0) | NA |
| Typhoon (%) | 0 (0.0) | 5 (1.3) | 0 (0.0) | 2 (0.5) | 9 (2.3) | 0.001* |
| Super typhoon (%) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 1 (0.3) | 1 (0.3) | 0.557 |
| Marathon (%) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 1 (0.3) | NA |
Chi-square test was used to measure the overall difference in proportion between the cities
\ indicates the absence of data
* p ≤ 0.05 indicates significant difference