Table 2 Reliability of self-reported behaviours using baseline and repeat assessment in UK Biobank (n = 18,905)
| Â | Baseline | Repeat | Lambda/kappa (SE) |
|---|---|---|---|
Years between baseline and repeat: | |||
 < 3 |  | 11% |  |
 ≥ 3 to < 4 |  | 24% |  |
 ≥ 4 to < 5 |  | 43% |  |
 ≥ 5 to < 6 |  | 21% |  |
 ≥ 6 |  | 1% |  |
Minutes per day of: | |||
 Heavy physical work | 16 (43) | 11 (36) | Λ = 0.527 (0.005) |
 Walking/standing work | 47 (82) | 31 (70) | Λ = 0.482 (0.005) |
 Sedentary work | 112 (143) | 76 (128) | Λ = 0.609 (0.005) |
 MVPA | 83 (99) | 81 (94) | Λ = 0.479 (0.006) |
 Walking for pleasure | 15 (22) | 16 (24) | Λ = 0.520 (0.007) |
 Strenuous sports | 3 (10) | 2 (10) | Λ = 0.453 (0.006) |
 Other exercises | 10 (18) | 10 (17) | Λ = 0.456 (0.006) |
 Light DIY | 11 (26) | 10 (23) | Λ = 0.256 (0.006) |
 Heavy DIY | 7 (19) | 6 (17) | Λ = 0.273 (0.006) |
Hours per day of: | |||
 Television viewing | 3 (1) | 3 (2) | Λ = 0.821 (0.005) |
 Computer use | 1 (1) | 1 (1) | Λ = 0.547 (0.007) |
Getting about method: |  |  | Κ = 0.324 (0.006) |
 Car or public transportation | 49% | 48% |  |
 Mixed use | 44% | 45% |  |
 Walking or cycling | 7% | 7% |  |
Commuting method: |  |  | Κ = 0.487 (0.006) |
 Car or public transportation | 90% | 93% |  |
 Mixed use | 7% | 5% |  |
 Walking or cycling | 3% | 2% |  |
Hours per day of sleep: |  |  | Κ = 0.500 (0.005) |
 ≤ 5.0 | 3% | 4% |  |
 6.0 | 18% | 17% |  |
 7.0 | 42% | 40% |  |
 8.0 | 30% | 31% |  |
 ≥ 9.0 | 7% | 8% |  |
PAEESR (kJ/day/kg) | 46 (4) | 47 (4) | Λ = 0.671 (0.005) |
IPAQ scoring (MET-minutes/day) | 345 (411) | 342 (395) | Λ = 0.489 (0.006) |
LTPA+OPA scoring (MET-minutes/day) | 349 (382) | 281 (337) | Λ = 0.552 (0.005) |