Table 1 Sociodemographic characteristics of the study population by types of diet

 N (%)

387,731 (94.8%)

7256 (1.8%)

9498 (2.3%)

4625 (1.1%)

409,110

 Age, mean (SD)

56.4 (8.09)

52.9 (7.92)

53.9 (8.03)

56.2 (8.12)

56.3 (8.11)

  Females

203,550 (52.5%)

4770 (65.7%)

6770 (71.3%)

3477 (75.2%)

218,567 (53.4%)

  Males

184,181 (47.5%)

2486 (34.3%)

2728 (28.7%)

1148 (24.8%)

190,543 (46.6%)

  Lower

133,296 (34.4%)

1882 (25.9%)

2766 (29.1%)

1300 (28.1%)

139,244 (34.0%)

  Middle

130,632 (33.7%)

2337 (32.2%)

3155 (33.2%)

1466 (31.7%)

137,590 (33.6%)

  Higher

123,803 (31.9%)

3037 (41.9%)

3577 (37.7%)

1859 (40.2%)

132,276 (32.3%)

  White

368,509 (95.0%)

5825 (80.3%)

8882 (93.5%)

4150 (89.7%)

387,366 (94.7%)

  Mixed

5309 (1.4%)

116 (1.6%)

142 (1.5%)

96 (2.1%)

5663 (1.4%)

  South Asian

5776 (1.5%)

1235 (17.0%)

284 (3.0%)

217 (4.7%)

7512 (1.8%)

  Black

5775 (1.5%)

30 (0.4%)

131 (1.4%)

143 (3.1%)

6079 (1.5%)

  Chinese

1206 (0.3%)

9 (0.1%)

10 (0.1%)

5 (0.1%)

1230 (0.3%)

  Any other

1156 (0.3%)

41 (0.6%)

49 (0.5%)

14 (0.3%)

1260 (0.3%)

 Height (m), mean (SD)

1.68 (0.09)

1.66 (0.09)

1.67 (0.09)

1.65 (0.09)

1.68 (0.09)

 Weight (kg), mean (SD)

78.4 (15.81)

71.5 (14.66)

70.7 (13.82)

70.3 (14.15)

78.0 (15.82)

 Waist (cm), mean (SD)

90.4 (13.35)

85.1 (12.80)

83.2 (12.07)

83.3 (12.57)

90.1 (13.38)

 Body mass index (kg/m²), mean (SD)

27.4 (4.71)

25.7 (4.63)

25.2 (4.24)

25.6 (4.60)

27.3 (4.72)

  Underweight

1752 (0.5%)

118 (1.6%)

155 (1.6%)

71 (1.5%)

2096 (0.5%)

  Normal

124,548 (32.1%)

3556 (49.0%)

5010 (52.7%)

2285 (49.4%)

135,399 (33.1%)

  Overweight

167,563 (43.2%)

2531 (34.9%)

3215 (33.8%)

1572 (34.0%)

174,881 (42.7%)

  Obese

93,868 (24.2%)

1051 (14.5%)

1118 (11.8%)

697 (15.1%)

96,734 (23.6%)

  Never

214,263 (55.3%)

4676 (64.4%)

5437 (57.2%)

2763 (59.7%)

227,139 (55.5%)

  Previous

133,411 (34.4%)

2086 (28.7%)

3390 (35.7%)

1511 (32.7%)

140,398 (34.3%)

  Current

40,057 (10.3%)

494 (6.8%)

671 (7.1%)

351 (7.6%)

41,573 (10.2%)

  Daily or almost daily

79,854 (20.6%)

1015 (14.0%)

1825 (19.2%)

641 (13.9%)

83,335 (20.4%)

  3-4 times a week

91,813 (23.7%)

1283 (17.7%)

2296 (24.2%)

828 (17.9%)

96,220 (23.5%)

  Once or twice a week

102,119 (26.3%)

1449 (20.0%)

2202 (23.2%)

1063 (23.0%)

106,833 (26.1%)

  1-3 times a month

43,093 (11.1%)

849 (11.7%)

1103 (11.6%)

522 (11.3%)

45,567 (11.1%)

  Special occasions only

42,704 (11.0%)

1026 (14.1%)

1065 (11.2%)

822 (17.8%)

45,617 (11.2%)

  Never

27,915 (7.2%)

1632 (22.5%)

1004 (10.6%)

743 (16.1%)

31,294 (7.6%)

  Missing

233 (0.1%)

2 (0.0%)

3 (0.0%)

6 (0.1%)

244 (0.1%)

  Sedentary time (h/day), mean (SD)

5.1 (2.26)

4.3 (2.23)

4.3 (2.09)

4.5 (2.33)

5.0 (2.26)

  Physical activity (MET/min/week), mean (SD)

2912.6 (3220.45)

2850.0 (3040.25)

2896.8 (2938.19)

3288.2 (3329.61)

2915.5 (3212.13)

  No

145,488 (37.5%)

3140 (43.3%)

4217 (44.4%)

1787 (38.6%)

154,632 (37.8%)

  Yes

242,243 (62.5%)

4116 (56.7%)

5281 (55.6%)

2838 (61.4%)

254,478 (62.2%)