Table 1 Demographics of the four participation measures.
From: Genetic predictors of participation in optional components of UK Biobank
Demographic | Summary demographics for those with food frequency data | Odds (95% CI) of participation in FFQ per unit change in demographic** | P* | |
|---|---|---|---|---|
N | 300,639 | |||
Mean age at baseline (SD) | 56.5 (8.0) | 1.06 (1.06, 1.07) | <1 × 10−15 | |
Male sex, N (%) | 139,941 (46.6) | 0.87 (0.85, 0.88) | <1 × 10−15 | |
Mean BMI at baseline (SD) | 27.2 (4.7) | 0.83 (0.83, 0.84) | <1 × 10−15 | |
Mean Townsend deprivation index (SD) | −1.73 (2.8) | 0.99 (0.98, 1.00) | 0.006 | |
Mean years in education (SD)*** | 15.8 (4.7) | 1.06 (1.06, 1.07) | <1 × 10−15 | |
Mean systolic blood pressure (SD) | 143 (23) | 0.96 (0.95, 0.97) | <1 × 10−15 | |
Mean fluid intelligence (SD) | 6.1 (2.1) | 1.19 (1.18, 1.20) | <1 × 10−15 | |
Mean self-reported physical activity | 7.4 (1.1) | 0.98 (0.98, 0.99) | 5 × 10−6 | |
Mean physical activity (accelerometer)**** | 0.21 (0.07) | 0.97 (0.96, 0.98) | 8 × 10−8 | |
Smoking status, N (%) | ||||
Never | 165,312 (55.0) | Reference | <1 × 10−15 | |
Former | 108,888 (36.2) | 0.94 (0.92, 0.95) | ||
Current | 22,862 (7.6) | 0.68 (0.67, 0.70) | ||
Type 2 diabetes, N (%) | 12,730 (4.2) | 0.83 (0.80, 0.86) | <1 × 10−15 | |
Depression, N (%) | 36,423 (12.1) | 1.00 (0.98, 1.02) | 0.96 | |
Demographic | Yes | No | Odds (95% CI) of participating in physical activity monitoring per unit change in demographic | P* |
|---|---|---|---|---|
N | 96,035 | 119,092 | ||
Mean age at baseline (SD) | 56.7 (7.8) | 56.7 (8.0) | 1.00 (0.99, 1.01) | 0.59 |
Male sex, N (%) | 42,226 (44.0) | 56,273 (47.3) | 0.88 (0.86, 0.89) | <1 × 10−15 |
Mean BMI at baseline (SD) | 26.7 (4.5) | 27.4 (4.7) | 0.86 (0.85, 0.87) | <1 × 10−15 |
Mean Townsend deprivation index (SD) | −1.80 (2.8) | −1.75 (2.8) | 0.98 (0.97, 0.99) | 5 × 10−5 |
Mean years in education (SD)*** | 16.2 (4.6) | 15.4 (4.9) | 1.04 (1.03, 1.04) | <1 × 10−15 |
Mean systolic blood pressure (SD) | 142 (23) | 143 (24) | 0.92 (0.92, 0.93) | <1 × 10−15 |
Mean fluid intelligence (SD) | 6.04 (2.11) | 5.98 (2.08) | 1.04 (1.03, 1.05) | 1 × 10−12 |
Mean self-reported physical activity | 7.42 (1.08) | 7.36 (1.13) | 1.05 (1.04, 1.06) | <1 × 10−15 |
Mean physical activity (accelerometer)**** | 0.21 (0.07) | NA | NA | NA |
Smoking status, N (%) | ||||
Never | 54,352 (56.6) | 64,944 (54.5) | Reference | <1 × 10−15 |
Former | 34,818 (36.3) | 42,781 (35.9) | 0.98 (0.97, 1.00) | |
Current | 5860 (6.1) | 9857 (8.3) | 0.72 (0.70, 0.74) | |
Type 2 diabetes, N (%) | 3260 (3.4) | 5428 (4.6) | 0.76 (0.73, 0.80) | <1 × 10−15 |
Depression, N (%) | 11,791 (12.3) | 13,528 (11.4) | 1.04 (1.02, 1.07) | 0.002 |
Demographic | Yes | No | Odds (95% CI) of participating in mental health questionnaire per unit higher demographic variable for continuous | P* |
|---|---|---|---|---|
N | 146,074 | 148,713 | ||
Mean age at baseline (SD) | 56.6 (7.7) | 56.5 (8.2) | 1.00 (1.00, 1.01) | 0.26 |
Male sex, N (%) | 63,586 (43.5) | 72,063 (48.5) | 0.82 (0.81, 0.83) | <1 × 10−15 |
Mean BMI at baseline (SD) | 26.8 (4.6) | 27.5 (4.7) | 0.86 (0.85, 0.87) | <1 × 10−15 |
Mean Townsend deprivation index (SD) | −1.79 (2.8) | −1.70 (2.8) | 0.97 (0.96, 0.97) | <1 × 10−15 |
Mean years in education (SD)*** | 16.4 (4.5) | 15.3 (4.9) | 1.06 (1.05, 1.06) | <1 × 10−15 |
Mean systolic blood pressure (SD) | 141 (23) | 143 (24) | 0.91 (0.90, 0.91) | <1 × 10−15 |
Mean fluid intelligence (SD) | 6.1 (2.1) | 6.0 (2.1) | 1.10 (1.09, 1.12) | <1 × 10−15 |
Mean self-reported physical activity | 7.4 (1.1) | 7.4 (1.1) | 0.99 (0.98, 1.00) | 0.05 |
Mean physical activity (accelerometer)**** | 0.21 (0.07) | 0.20 (0.07) | 1.03 (1.01, 1.04) | 0.0008 |
Smoking status, N (%) | ||||
Never | 83,571 (57.2) | 79,862 (53.7) | Reference | <1 × 10−15 |
Former | 51,859 (35.5) | 54,247 (36.5) | 0.92 (0.91, 0.94) | |
Current | 9062 (6.2) | 9062 (6.2) | 0.69 (0.67, 0.71) | |
Type 2 diabetes, N (%) | 4692 (3.2) | 7311 (4.9) | 0.69 (0.66, 0.71) | <1 × 10−15 |
Depression, N (%) | 17,660 (12.1) | 18,002 (12.1) | 0.95 (0.93, 0.98) | 6 × 10−5 |
Demographic | Yes | No | Odds (95% CI) of completing aide-memoire per unit change in demographic | P* |
|---|---|---|---|---|
N | 361,501 | 89,535 | ||
Mean age at baseline (SD) | 57.6 (7.9) | 55.9 (8.1) | 1.24 (1.23, 1.25) | <1 × 10−15 |
Male sex, N (%) | 162,332 (44.9) | 43,887 (49.0) | 0.84 (0.83, 0.85) | <1 × 10−15 |
Mean BMI at baseline (SD) | 27.4 (4.8) | 27.6 (4.8) | 0.95 (0.94, 0.96) | <1 × 10−15 |
Mean Townsend deprivation index (SD) | −1.55 (2.9) | −1.17 (3.1) | 0.90 (0.90, 0.91) | <1 × 10−15 |
Mean years in education (SD)*** | 14.8 (5.1) | 15.2 (5.1) | 0.99 (0.99, 0.99) | <1 × 10−15 |
Mean systolic blood pressure (SD) | 145 (24.2) | 142 (23) | 1.07 (1.06, 1.08) | <1 × 10−15 |
Mean fluid intelligence (SD) | 5.9 (2.1) | 5.9 (2.1) | 1.03 (1.01, 1.04) | 3 × 10−6 |
Mean self-reported physical activity | 7.4 (1.1) | 7.4 (1.1) | 1.00 (0.99, 1.00) | 0.98 |
Mean physical activity (accelerometer)**** | 0.21 (0.07) | 0.20 (0.07) | 1.05 (1.03, 1.07) | 9 × 10−9 |
Smoking status, N (%) | ||||
Never | 195,889 (54.2) | 46,781 (52.3) | Reference | <1 × 10−15 |
Former | 128,821 (35.6) | 31,082 (34.7) | 0.94 (0.93, 0.96) | |
Current | 32,165 (8.9) | 10,209 (11.4) | 0.79 (0.77, 0.81) | |
Type 2 diabetes, N (%) | 18,130 (5.0) | 4425 (4.9) | 0.94 (0.91, 0.97) | 0.0003 |
Depression, N (%) | 38,535 (10.7) | 10,541 (11.8) | 0.88 (0.86, 0.90) | <1 × 10−15 |
