Table 1 Characteristics of study participants (n = 1374) and those excluded from sample (n varies due to missing data)
From: Association between device-measured physical activity and lumbar Modic changes
Sample | Excluded | P for difference between Sample and Excluded | ||||
|---|---|---|---|---|---|---|
Men (n = 640) | Women (n = 734) | Men | Women | Men | Women | |
Age, years; mean (SDa) | 46.8 (0.4) | 46.8 (0.4) | 46.8 (0.5) | 46.8 (0.4) | 0.723 | 0.426 |
BMIb, kg/m2; mean (SD) | 27.0 (3.7) | 26.2 (5.0) | 27.4 (4.4) | 26.6 (5.4) | 0.021 | 0.075 |
Education years; % (n) | 0.143 | 0.003 | ||||
≤ 9 | 3.3 (21) | 2.9 (21) | 4.7 (142) | 3.5 (127) | ||
9–12 | 73 (467) | 71.3 (523) | 72.9 (2222) | 65.9 (2405) | ||
> 12 | 23.8 (152) | 25.9 (190) | 22.5 (685) | 30.6 (1117) | ||
Smoking; % (n) | < 0.001 | 0.018 | ||||
Non-smoker | 48.8 (312) | 59.8 (439) | 44.7 (1349) | 57.2 (2064) | ||
Former smoker | 34.4 (220) | 24.7 (181) | 30.4 (917) | 23.6 (853) | ||
Current smoker | 16.9 (108) | 15.5 (114) | 24.9 (750) | 19.2 (693) | ||
Accelerometer data | ||||||
Moderate to vigorous PAc, min/day; median (IQRd) | 73 (53—97) | 57 (40—76) | 73 (52—97) | 56 (41—76) | 0.881 | 0.845 |
Wear time, min/day; median (IQR) | 990 (948—1026) | 972 (936—1008) | 990 (948—1032) | 978 (942—1008) | 0.101 | 0.079 |
Prevalence of MCe; % (n) | ||||||
Any MC | 74.4 (476) | 59.7 (438) | 75.2 (528) | 60.1 (478) | 0.098 | 0.455 |
MC1 | 32.7 (209) | 31.7 (233) | 32.4 (230) | 31.0 (248) | 0.708 | 0.113 |
MC2 | 65.3 (418) | 44.4 (326) | 65.7 (466) | 44.3 (355) | 0.479 | 0.858 |