Table 1.
Sample characteristics of participants in an accelerometer-derived physical activity study
| Variables | Characteristics of overall participants | ||||
|---|---|---|---|---|---|
| Overall | Active regulara | Inactivea | Active WWa | P valueb | |
| No. | 89,400 | 20,381 | 31,778 | 37,241 | |
| Age(mean (SD)) | 56.05 (7.84) | 54.94 (7.87) | 56.79 (7.86) | 56.04 (7.74) | <0.001 |
| Sex(%) | |||||
| Female | 50,308 (56.3) | 10,326 (50.7) | 20,843 (65.6) | 19,139 (51.4) | <0.001 |
| Male | 39,092 (43.7) | 10,055 (49.3) | 10,935 (34.4) | 18,102 (48.6) | |
| BMI(mean (SD)) | 26.70 (4.50) | 25.79 (4.00) | 27.93 (5.10) | 26.14 (3.95) | <0.001 |
| TDI (mean (SD)) | −1.72 (2.81) | −1.29 (3.00) | −1.77 (2.78) | −1.92 (2.69) | <0.001 |
| Average gross household income before taxes(%) | |||||
| 18,000 to 100,000 | 63,476 (71.0) | 14,664 (71.9) | 21,735 (68.4) | 27,077 (72.7) | <0.001 |
| Greater than 100,000 | 6160 (6.9) | 1771 (8.7) | 1531 (4.8) | 2858 (7.7) | |
| Less than 18,000 | 11,592 (13.0) | 2379 (11.7) | 5041 (15.9) | 4172 (11.2) | |
| Unknow | 8172 (9.1) | 1567 (7.7) | 3471 (10.9) | 3134 (8.4) | |
| Healthdietscore (%) | |||||
| 0 | 1545 (1.7) | 341 (1.7) | 600 (1.9) | 604 (1.6) | <0.001 |
| 1 | 8132 (9.1) | 1780 (8.7) | 3105 (9.8) | 3247 (8.7) | |
| 2 | 17,754 (19.9) | 3749 (18.4) | 6614 (20.8) | 7391 (19.8) | |
| 3 | 24,909 (27.9) | 5640 (27.7) | 8815 (27.7) | 10,454 (28.1) | |
| 4 | 23,881 (26.7) | 5623 (27.6) | 8198 (25.8) | 10,060 (27.0) | |
| 5 | 13,179 (14.7) | 3248 (15.9) | 4446 (14.0) | 5485 (14.7) | |
| Race (%) | |||||
| Asia | 916 (1.0) | 206 (1.0) | 409 (1.3) | 301 (0.8) | <0.001 |
| Black | 255 (0.3) | 65 (0.3) | 116 (0.4) | 74 (0.2) | |
| Other | 4784 (5.4) | 1339 (6.6) | 1574 (5.0) | 1871 (5.0) | |
| White | 83,445 (93.3) | 18,771 (92.1) | 29,679 (93.4) | 34,995 (94.0) | |
| MVPA (mean (SD)) | 282.28 (251.60) | 495.45 (292.59) | 68.44 (47.69) | 348.08 (186.97) | <0.001 |
| smoke (%) | |||||
| No | 83,243 (93.1) | 19,111 (93.8) | 29,016 (91.3) | 35,116 (94.3) | <0.001 |
| Only occasionally | 2009 (2.2) | 504 (2.5) | 699 (2.2) | 806 (2.2) | |
| Yes, on most or all days | 4148 (4.6) | 766 (3.8) | 2063 (6.5) | 1319 (3.5) | |
| alcohol (%) | |||||
| Current | 84,485 (94.5) | 19,360 (95.0) | 29,524 (92.9) | 35,601 (95.6) | <0.001 |
| Never | 2503 (2.8) | 488 (2.4) | 1205 (3.8) | 810 (2.2) | |
| Previous | 2412 (2.7) | 533 (2.6) | 1049 (3.3) | 830 (2.2) | |
| Hypertension (%) | |||||
| Elevated | 12,054 (13.5) | 2880 (14.1) | 3991 (12.6) | 5183 (13.9) | <0.001 |
| Normal | 15,137 (16.9) | 3823 (18.8) | 4918 (15.5) | 6396 (17.2) | |
| stage1 | 24,663 (27.6) | 5754 (28.2) | 8686 (27.3) | 10,223 (27.5) | |
| stage2 | 37,546 (42.0) | 7924 (38.9) | 14,183 (44.6) | 15,439 (41.5) | |
| Diabetes (%) | |||||
| No | 85,856 (96.0) | 19,781 (97.1) | 29,891 (94.1) | 36,184 (97.2) | <0.001 |
| Yes | 3544 (4.0) | 600 (2.9) | 1887 (5.9) | 1057 (2.8) | |
| Family history of Parkinson’s disease (%) | |||||
| No | 85,303 (95.4) | 19,409 (95.2) | 30,341 (95.5) | 35,553 (95.5) | 0.35 |
| Yes | 4097 (4.6) | 972 (4.8) | 1437 (4.5) | 1688 (4.5) | |
| education (%) | |||||
| Any school degree | 11,926 (13.3) | 2681 (13.2) | 4303 (13.5) | 4942 (13.3) | <0.001 |
| College or University degree | 39,048 (43.7) | 10,204 (50.1) | 11,349 (35.7) | 17,495 (47.0) | |
| Other | 34,773 (38.9) | 6736 (33.1) | 14,561 (45.8) | 13,476 (36.2) | |
| Vocational | 3653 (4.1) | 760 (3.7) | 1565 (4.9) | 1328 (3.6) | |
BMI Body Mass Index, TDI Townsend Deprivation Index, VPA moderate to vigorous physical activity
aThreshold for MVPA is 150 minutes.
bAnalysis of variance or x2 test where appropriate