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Table 1 Baseline characteristics of study participants by cohort and case status (death during follow-up) and number of cases for cause-specific mortality analyses by cohort

From: Evidence for the free radical/oxidative stress theory of ageing from the CHANCES consortium: a meta-analysis of individual participant data

Baseline characteristics

HAPIEE Poland

HAPIEE Czech Republic

HAPIEE Lithuania

ESTHER Germany

Cases (Deaths)

Eligible controls

Cases (Deaths)

Eligible controls

Cases (Deaths)

Eligible controls

Cases (Deaths)

Controls

Total sample size

525

1498

518

1776

390

1278

269

3,758

Age (years)

62.9 (56.7; 67.0)*

62.1 (55.8; 66.5)

63.6 (58.6; 67.4)

63.0 (57.9; 66.8)

66.5 (61.1; 70.3)

66.1 (60.5; 70.1)

74.1 (70.0; 78.1)*

69.2 (64.3; 74.0)

 45 to <60

190 (36.2)

594 (39.7)

154 (29.7)

559 (31.5)

79 (20.3)

292 (22.9)

10 (3.7)*

345 (9.2)

 60 to <65

126 (24.0)

355 (23.7)

144 (27.8)

518 (29.2)

83 (21.3)

265 (20.7)

18 (6.9)*

681 (18.1)

 65 to <70

198 (37.7)

507 (33.9)

198 (38.2)

634 (35.7)

124 (31.8)

391 (30.6)

42 (15.6)*

1020 (27.1)

 70 to <85

11 (2.1)

42 (2.8)

22 (4.3)

65 (3.7)

104 (26.7)

330 (25.8)

199 (74.0)*

1712 (45.6)

Male sex

357 (68.0)

1015 (67.8)

339 (65.4)

1170 (65.9)

261 (66.9)

830 (65.0)

158 (58.7)*

1636 (43.5)

Education

 Low

90 (17.2)*

168 (11.2)

90 (17.5)*

175 (10.0)

68 (17.8)*

130 (10.3)

192 (73.3)

2633 (71.1)

 Medium

322 (61.5)*

842 (56.2)

377 (73.5)*

1296 (73.7)

181 (47.4)*

463 (36.6)

59 (22.5)

852 (23.0)

 High

112 (21.4)*

488 (32.5)

46 (9.0)*

287 (16.3)

133 (34.8)*

672 (53.1)

11 (4.2)

218 (5.9)

BMI (kg/m2)

27.4 (24.5; 30.9)

27.9 (25.1; 30.7)

28.7 (25.7; 32.0)*

28.0 (25.5; 30.9)

28.5 (25.4; 32.8)

29.0 (25.7; 32.1)

28.3 (24.9; 31.2)

27.8 (25.1; 30.9)

 <20

13 (2.5)

24 (1.6)

10 (1.9)*

20 (1.1)

11 (2.8)*

10 (0.8)

5 (2.0)

47 (1.3)

 20 to <25

130 (24.9)

330 (22.1)

92 (17.8)*

344 (19.4)

74 (19.0)*

236 (18.5)

60 (23.4)

857 (23.2)

 25 to <30

222 (42.5)

682 (45.6)

207 (40.0)*

827 (46.6)

154 (39.5)*

516 (40.4)

112 (43.6)

1625 (44.0)

 30 to <35

110 (21.1)

362 (24.2)

149 (28.8)*

450 (25.4)

98 (25.1)*

369 (28.9)

52 (20.2)

859 (23.3)

 ≥35

47 (9.0)

98 (6.6)

60 (11.6)*

134 (7.6)

53 (13.6)*

147 (11.5)

28 (10.9)

304 (8.2)

Smoking

 Never

124 (23.8)*

598 (40.0)

140 (27.5)*

761 (43.6)

176 (46.2) *

742 (58.7)

100 (38.8)*

2119 (57.3)

 Former

175 (33.5)*

510 (34.1)

192 (37.6)*

598 (34.3)

99 (26.0) *

295 (23.3)

123 (47.7)*

1310 (35.4)

 Current

223 (42.7)*

386 (25.8)

178 (34.9)*

386 (22.1)

106 (27.8) *

227 (18.0)

35 (13.6)*

271 (7.3)

Alcohol consumption (g/day)

0 (0; 11.4)*

0 (0; 25.4)

11.4 (2.7; 31.9)*

14.3 (5.7; 30.3)

0 (0; 8)

1.4 (0; 10.3)

3.4 (0; 13.5)*

6.7 (0; 14.4)

Vigorous physical activity

331 (67.8)*

1078 (75.4)

298 (60.8)*

1295 (74.7)

176 (46.4)*

742 (58.7)

87 (41.6)*

2067 (62.4)

Total cholesterol (mg/dL)

218 (192; 251)

219 (195; 247)

213 (186; 239)*

218 (194; 247)

220 (190; 251)*

225 (200; 255)

211 (180; 249)*

233 (202; 265)

 <200

180 (34.3)

443 (29.7)

206 (39.9)*

550 (31.0)

124 (31.8)*

323 (25.4)

102 (38.1)*

868 (23.1)

 200 to <280

297 (56.6)

930 (62.1)

272 (52.6)*

1088 (61.3)

230 (59.0)*

801 (62.9)

135 (50.4)*

2278 (60.7)

 ≥280

48 (9.1)

125 (8.3)

39 (7.5)*

138 (7.8)

36 (9.2)*

149 (11.7)

31 (11.6)*

609 (16.2)

HDL cholesterol (mg/dL)

51 (42; 61)*

52 (44; 61)

48 (40; 58)*

49 (41; 60)

53 (43; 63)*

54 (46; 65)

54 (45; 64)*

59 (49; 70)

 <40

97 (18.5)*

187 (12.5)

132 (25.5)

369 (20.9)

72 (19.0)*

133 (10.6)

38 (14.2)*

221 (5.9)

 40 to <80

392 (74.7)*

1237 (82.6)

359 (69.4)

1313 (74.3)

280 (73.7)*

1024 (81.7)

207 (77.2)*

3098 (82.5)

 ≥80

36 (6.9)*

74 (4.9)

26 (5.0)

86 (4.9)

28 (7.4)*

96 (7.7)

23 (8.6)*

436 (11.6)

CRP (mg/L)

2.6 (1.1; 5.6)*

1.7 (0.8; 3.1)

2.7 (1.12; 5.6)*

1.9 (0.9; 3.6)

2.7 (1.2; 5.6)*

1.6 (0.8; 3.2)

2.8 (1.3; 6.2)*

1.8 (0.9; 3.7)

 ≤3

294 (56.0)*

1100 (73.4)

281 (54.3)*

1218 (68.6)

214 (54.9)*

931 (72.9)

143 (53.2)*

2567 (68.3)

 >3 to ≤10

165 (31.4)*

328 (21.9)

185 (35.7)*

474 (26.7)

125 (32.1)*

276 (21.6)

96 (35.7)*

967 (25.7)

 >10

66 (12.6)*

70 (4.7)

52 (10.0)*

84 (4.7)

51 (13.1)*

71 (5.6)

30 (11.2)*

224 (6.0)

eGFR (mL/min/1.73 m2)

89.2 (76.1; 97.5)

88.6 (77.7; 95.7)

78.2 (64.9; 90.4)*

80.1 (69.3; 90.6)

85.0 (70.0; 93.4)

86.5 (74.1; 94.2)

63.9 (51.8; 76.9)*

71.8 (62.7; 80.7)

 ≥60

487 (92.7)*

1440 (96.1)

426 (82.2)*

1600 (90.1)

336 (86.2)*

1184 (92.6)

163 (60.6)*

3001 (80.0)

 <60

38 (7.2)*

58 (3.9)

92 (17.8)*

176 (9.9)

54 (13.9)*

94 (7.4)

106 (39.4)*

757 (20.1)

History of hypertension

323 (61.9)*

837 (55.9)

300 (58.6)*

902 (50.9)

248 (65.1)

788 (62.4)

221 (82.2)*

2637 (70.2)

History of diabetes

111 (21.2)*

207 (13.8)

123 (24.0)*

243 (13.7)

56 (14.7)*

91 (7.2)

108 (40.2)*

892 (23.7)

History of MI

110 (21.1)*

147 (9.9)

69 (14.1)*

104 (6.1)

71 (18.6)*

121 (9.6)

50 (18.6)*

217 (5.8)

History of stroke

31 (6.0)*

33 (2.2)

40 (8.2)*

59 (3.5)

35 (9.2)*

68 (5.4)

46 (17.1)*

262 (7.0)

History of cancer

52 (9.9)*

67 (4.5)

53 (10.2)*

93 (5.2)

58 (14.9)*

104 (8.1)

94 (34.9)*

428 (11.4)

d-ROMs (Carr U)

368 (324; 425)*

349 (309; 394)

404 (350; 470)*

381 (335; 439)

372 (330; 421)*

356 (317; 393)

369 (320; 406)*

350 (305; 395)

 ≤340

178 (33.9)*

650 (43.4)

102 (19.7)*

483 (27.2)

123 (31.5)*

498 (39.0)

96 (35.7)*

1649 (43.9)

 341–400

167 (31.8)*

514 (34.1)

146 (28.2)*

564 (31.8)

138 (35.4)*

500 (39.1)

94 (34.9)*

1250 (33.3)

 401–500

143 (27.2)*

314 (21.0)

185 (35.7)*

561 (31.6)

101 (25.9)*

258 (20.2)

70 (26.0)*

789 (21.0)

 >500

37 (7.0)*

20 (1.3)

85 (16.4)*

168 (9.5)

28 (7.2)*

22 (1.7)

9 (3.3)*

70 (1.9)

TTL (μmol/L)

509 (445; 566)*

518 (464; 570)

406 (363; 452)

411 (371; 450)

313 (273; 357)*

321 (283; 359)

303 (239; 356) *

335 (284; 383)

Cause of death

 CVD

165 (32.0)

n.a.

189 (36.6)

n.a.

155 (39.7)

n.a.

51 (31.7)

n.a.

 Cancer

235 (45.5)

n.a.

235 (45.5)

n.a.

158 (40.5)

n.a.

74 (46.0)

n.a.

 Non-CVD, non-cancer

116 (22.5)

n.a.

93 (18.0)

n.a.

77 (19.7)

n.a.

36 (22.4)

n.a.

 Unknown

9 (n.a.)

n.a.

1 (n.a.)

n.a.

0 (n.a.)

n.a.

108 (n.a.)a

n.a.

  1. Unless indicated otherwise, the table shows proportions (%) for categorical and medians (25th; 75th percentile) for continuous variables. Numbers shown were drawn from the not imputed data set. Therefore, numbers do not always add up to the total because of missing values (see Additional file 1: Table S1 for proportion of missing values for each variable)
  2. *Statistically significant (P <0.05) difference among cases and controls assessed by χ2 test for categorical and Wilcoxon rank sum test for continuous variables
  3. BMI, Body mass index; CRP, C-reactive protein; CVD, Cardiovascular disease; d-ROMs, Derivatives of reactive oxygen metabolites; eGFR, Estimated glomerular filtration rate; HDL, High-density lipoprotein; MI, Myocardial infarction; n.a., Not applicable; TTL, Total thiol levels
  4. aInformation on cause of death is released by German authorities later than general mortality information. At the time of the analysis, information about all-cause mortality was available until July 31, 2014, and information about causes of deaths for deaths that occurred until April 2, 2013