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Table 1 Characteristics of the study population

From: Predictors of elevated capillary blood glucose in overweight railway French employees: a cross-sectional analysis

Characteristics

Total

Capillary blood glucose

Normal (< 7 mmol/L)

n (%)

Elevated (≥ 7 mmol/L)

n (%)

p value

(n = 2248)

1798 (80.0)

450 (20.0)

Sex

 Women

416 (18.5)

363 (87.3)

53 (12.7)

< 0.001

 Men

1832 (81.5)

1435 (78.3)

397 (21.7)

 

Age (years)

 < 30

163 (7.2)

137 (84.0)

26 (16.0)

< 0.001

 31–39

657 (29.2)

562 (85.5)

95 (14.5)

 

 40–49

716 (31.9)

561 (78.3)

155 (21.7)

 

 ≥ 50

712 (31.7)

538 (75 .6)

174 (24.4)

 

Marital status

 Married/living with a partner

1916 (85.2)

1535 (80.1)

381 (19.9)

0.71

 Single

332 (14.8)

263 (79.2)

69 (20.8)

 

Professional grade

 Low

946 (42.1)

742 (78.4)

204 (21.6)

0.28

 Intermediate

695 (30.9)

561 (80.7)

134 (19.3)

 

 High

607 (27.0)

495 (81.6)

112 (18.4)

 

Job sector

 Administrative staff

281 (12.5)

231 (82.2)

50 (17.8)

0.76

 Freight

117 (5.2)

96 (82.0)

21 (18.0)

 

 Infrastructure

785 (34.9)

625 (79.6)

160 (20.4)

 

 Material

340 (15.1)

263 (75.4)

77 (22.6)

 

 Traction

238 (10.6)

195 (81.9)

43 (18.1)

 

 Transportation

450 (20.0)

358 (79.6)

92 (20.4)

 

 Security

37 (1.7)

30 (81.1)

7 (18.9)

 

Job seniority (years)

 ≤ 10

465 (20.7)

391 (84.1)

74 (15.9)

< 0.01

 11–20

704 (31.3)

577 (82.0)

127 (18.0)

 

 21–30

596 (26.5)

465 (78.0)

131 (22.0)

 

 ≥ 30

483 (21.5)

365 (75.6)

118 (24.4)

 

Work schedule

 Day only

1359 (60.5)

1087 (80.0)

272 (20.0)

0.48

 Shift work

517 (23.0)

422 (81.6)

95 (18.4)

 

 Rotating shift work

338 (15.0)

264 (78.1)

74 (21.9)

 

 Night only

34 (1.5)

25 (73.5)

9 (26.5)

 

BMI (kg/m2)

 25 to 27.4

1111 (49.4)

906 (81.6)

205 (18.4)

0.07

 27.5 to 29.9

1137 (50.6)

892 (78.5)

245 (21.6)

 

Waist circumference

 Normal

1444 (64.2)

1160 (80.3)

284 (19.7)

0.58

 Elevated

804 (35.8)

638 (79.4)

166 (20.7)

 

Blood pressure

 Normal

1606 (71.4)

1318 (82.1)

288 (17.9)

< 0.001

 High

642 (28.6)

480 (74.8)

162 (25.2)

 

Risk of sleep apnoea

 Low

1868 (83.1)

1505 (80.6)

363 (19.4)

0.12

 High

380 (16.9)

293 (77.1)

87 (22.9)

 

Physical activity

 Inactive

715 (31.8)

577 (80.7)

138 (19.3)

0.72

 Moderately inactive

468 (20.8)

367 (78.4)

101 (21.6)

 

 Moderately active

566 (25.2)

450 (79.5)

116 (20.5)

 

 Active

499 (22.2)

404 (81.0)

95 (19.0)

 

Diet

Cereals/bread

 Never or less than 3 times per week

172 (7.6)

135 (78.5)

37 (21.5)

0.69

 3 to 6 times per week

350 (15.6)

287 (82.0)

63 (18.0)

 

 1 or 2 times per day

1119 (49.8)

896 (80.1)

223 (19.9)

 

 At least, three times per day

607 (27.0)

480 (79.1)

127 (20.9)

 

Rice/pasta

 Never or less than 3 times per week

282 (12.5)

224 (79.4)

58 (20.6)

0.79

 3 to 6 times per week

1350 (60.1)

1083 (80.2)

267 (19.8)

 

 1 or 2 times per day

599 (26.6)

479 (80.0)

120 (20.0)

 

 At least, three times per day

17 (0.8)

12 (70.6)

5 (29.4)

 

Dairy products

 Never or less than 3 times per week

216 (9.6)

172 (79.6)

44 (20.4)

0.65

 3 to 6 times per week

530 (23.6)

427 (80.6)

103 (19.4)

 

 1 or 2 times per day

1254 (55.8)

994 (79.3)

260 (20.7)

 

 At least, three times per day

248 (11.0)

205 (82.7)

43 (17.3)

 

Fruits and vegetables

 Never or less than 3 times per week

192 (8.5)

149 (77.6)

43 (22.4)

0.24

 3 to 6 times per week

923 (41.1)

725 (78.6)

198 (21.4)

 

 1 or 2 times per day

943 (41.9)

765 (81.1)

178 (18.9)

 

 At least, three times per day

190 (8.5)

159 (83.7)

31 (16.3)

 

Meat and poultry, eggs and fish

 Never or less than 3 times per week

125 (5.5)

93 (74.4)

32 (25.6)

0.33

 3 to 6 times per week

822 (36.6)

652 (79.3)

170 (20.7)

 

 1 or 2 times per day

1261 (56.1)

1021 (81.0)

240 (19.0)

 

 At least, three times per day

40 (1.8)

32 (80.0)

8 (20.0)

 

Ready-to-eat food

 Never or less than 3 times per week

1797 (79.9)

1437 (80.0)

360 (20.0)

0.12

 3 to 6 times per week

395 (17.6)

322 (81.5)

73 (18.5)

 

 1 or 2 times per day

56 (2.5)

39 (69.6)

17 (30.4)

 

Sugary food

 Never or less than 3 times per week

874 (38.9)

719 (82.3)

155 (17.7)

< 0.05

 3 to 6 times per week

840 (37.4)

674 (80.2)

166 (19.8)

 

 Once per day or more

534 (23.7)

405 (75.8)

129 (24.2)

 

You add to your meals…

Salt

 Never/sometimes

1316 (58.5)

1052 (79.9)

264 (20.1)

0.95

 Often/always

932 (41.5)

746 (80.0)

186 (20.0)

 

You drink…

Sugary drinks

 Never or less than 3 times per week

718 (31.9)

590 (82.2)

128 (17.8)

< 0.05

 3 to 6 times per week

458 (20.4)

367 (80.1)

91 (19.9)

 

 1 or 2 times per day

674 (30.0)

544 (80.7)

130 (19.3)

 

 At least, three times per day

398 (17.7)

297 (74.6)

101 (25.4)

 

Alcoholic beverages

 Never or less than 3 times per week

1513 (67.3)

1231 (81.4)

282 (18.6)

< 0.05

 3 times or more per week

735 (32.7)

567 (77.1)

168 (22.9)