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Table 5 Association of derivatives of reactive oxygen metabolites (d-ROMs) levels and total thiol levels (TTL) with all-cause and disease specific mortality stratified by cohort/country, sex, age, history of myocardial infarction, history of cancer, inflammatory status and time-point of event during follow-up

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

Outcome

Stratum

ncases

Increase of d-ROMs by 1 SDa

Decrease of TTL by 1 SDb

RR (95 % CI)c

RR (95 % CI)c

Stratified by cohort/country

All-cause mortality

HAPIEE Poland

525

1.29 (1.14–1.46)*

1.14 (1.01–1.28)*

HAPIEE Czech Republic

518

1.33 (1.17–1.51)*

1.05 (0.93–1.19)

HAPIEE Lithuania

390

1.47 (1.25–1.71)*

1.31 (1.10–1.57)*

ESTHER (Germany)

269

1.33 (1.18–1.49)*

1.31 (1.15–1.48)*

CVD mortality

HAPIEE Poland

165

1.54 (1.21–1.95)*

1.22 (0.98–1.53)

HAPIEE Czech Republic

189

1.56 (1.22–2.00)*

1.25 (0.99–1.56)

HAPIEE Lithuania

155

1.40 (1.06–1.85)*

1.48 (1.06–2.06)*

ESTHER (Germany)

51

1.24 (0.94–1.63)

1.39 (1.06–1.84)*

Cancer mortality

HAPIEE Poland

235

1.17 (0.98–1.41)

1.06 (0.89–1.26)

HAPIEE Czech Republic

235

1.36 (1.13–1.63)*

0.95 (0.79–1.14)

HAPIEE Lithuania

158

1.60 (1.25–2.04)*

1.18 (0.89–1.55)

ESTHER (Germany)

74

1.40 (1.13–1.74)*

1.21 (0.96–1.53)

Stratified by age

All-cause mortality

45 to <60 yearsd

423

1.23 (1.04–1.45)*

1.16 (1.01–1.34)*

60 to <70 years

933

1.39 (1.27–1.53)*

1.16 (1.05–1.29)*

70 to <85 yearse, f

303

1.33 (1.17–1.52)*

1.35 (1.18–1.55)*

CVD mortality

45 to <60 yearsd

126

1.42 (1.01–2.00)*

1.24 (0.91–1.69)

60 to <70 yearsd

322

1.64 (1.35–2.00)*

1.31 (1.09–1.56)*

70 to <85 yearse, f

90

1.28 (0.97–1.69)

1.65 (1.22–2.24)*

Cancer mortality

45 to <60 yearsd

177

1.21 (0.81–1.81)

1.20 (0.96–1.50)

60 to <70 yearsd

392

1.41 (1.21–1.64)*

1.02 (0.86–1.21)

70 to <85 yearse, f

94

1.46 (1.13–1.87)*

1.17 (0.89–1.52)

Stratified by sex

All-cause mortality

Women

587

1.28 (1.13–1.44)*

1.25 (1.05–1.50)*

Men

1115

1.40 (1.29–1.53)*

1.18 (1.08–1.28)*

CVD mortality

Womend

157

1.42 (1.08–1.87)*

1.28 (0.98–1.69)

Men

385

1.50 (1.27–1.76)*

1.33 (1.13–1.56)*

Cancer mortality

Women

257

1.31 (1.05–1.65)*

1.16 (0.96–1.40)

Men

445

1.39 (1.21–1.59)*

1.06 (0.93–1.21)

Stratified by history of MI

All-cause mortality

No history of MI

1286

1.33 (1.22–1.41)*

1.17 (1.04–2.61)*

History of MIg

375

1.39 (1.17;1.65 )*

1.19 (0.97–1.63)

CVD mortality

No history of MI

379

1.35 (1.14–1.57)*

1.22 (1.04–1.43)*

History of MId, g

165

1.45 (1.04–2.02)*

1.19 (0.88–1.61)

Stratified by history of cancer

All-cause mortality

No history of cancer

1382

1.32 (1.23–1.42)*

1.16 (1.05–1.29)*

History of cancerg

257

1.49 (1.24–1.77)*

1.24 (1.00–1.54)*

Cancer mortality

No history of cancer

533

1.29 (1.15–1.45)*

1.01 (0.89–1.14)

History of cancerg

169

1.53 (1.19–1.97)*

1.16 (0.91–1.47)

Stratified by inflammatory status

All-cause mortality

CRP ≤3 mg/L

933

1.19 (1.08–1.31)*

1.12 (0.97–1.30)

CRP >3 mg/L

769

1.26 (1.15–1.38)*

1.16 (1.05–1.28)*

CVD mortality

CRP ≤3 mg/Ld

265

1.26 (1.00–1.58)*

1.10 (0.90–1.35)

CRP >3 mg/L

275

1.28 (1.07–1.54)*

1.22 (1.01–1.48)*

Cancer mortality

CRP ≤3 mg/L

394

1.22 (1.04–1.43)*

1.06 (0.90–1.26)

CRP >3 mg/L

308

1.27 (1.10–1.46)*

1.07 (0.91–1.26)

Stratified by time-point of event during follow-up

All-cause mortality

≤ year 2

419

1.46 (1.29–1.66)*

1.29 (1.11–1.50)*

> year 2 to ≤ year 4

597

1.31 (1.17–1.46)*

1.18 (1.06–1.33)*

> year 4 to ≤ year 6

433

1.25 (1.09–1.43)*

1.17 (1.02–1.33)*

  1. *Statistically significant (P <0.05)
  2. a1 SD of d-ROMs levels equal to 81.1, 89.6, 70.5, and 71.9 Carr U in the HAPIEE Poland, Czech Republic, Lithuania, and ESTHER study, respectively
  3. b1 SD of TTL equals 79.5, 69.1, 74.1, and 75.3 μmol/L in the HAPIEE Poland, Czech Republic, Lithuania, and ESTHER study, respectively
  4. cMeta-analysis of HAPIEE Poland, Czech Republic, Lithuania, and ESTHER study if not stated otherwise. Model controlled for age, sex, education, BMI, smoking status, alcohol consumption, vigorous physical activity, and the other oxidative stress marker (i.e. TTL or d-ROMs)
  5. dMeta-analyses without the ESTHER study because too few events (<25) were observed in this category in this study
  6. eMeta-analyses without the HAPIEE Poland study because too few events (<25) were observed in this category in this study
  7. f Meta-analyses without the HAPIEE Czech Republic study because too few events (<25) were observed in this category in this study
  8. gOne instead of two matched controls due to a shortage of potential controls in this category in the HAPIEE cohorts
  9. CVD, Cardiovascular disease; CI, Confidence interval; CRP, C-reactive protein; MI, Myocardial infarction; ncases, Incident case numbers; RR, Risk ratio; SD, Standard deviation