Table 7

Results of regression analyses of metabolic syndrome and central augmentation index with combat-related traumatic injury, by injured/uninjured (model 1) and by injury severity (model 2)

Metabolic syndrome (yes/no)
UnivariableModel 1Model 2
Unadjusted RR (95% CI)P valueAdjusted RR (95% CI)P valueAdjusted RR (95% CI)P value
Uninjured (ref)(ref)(ref)
  Injured1.52 (1.14 to 2.02)0.0051.34 (1.10 to 1.79)0.045
Uninjured (ref)(ref)(ref)
 Injured (NISS <13)1.28 (0.90 to 1.83)0.171.17 (0.82 to 1.67)0.39
 Injured (NISS ≥13)1.74 (1.26 to 2.40)0.0011.53 (1.10 to 2.12)0.01
Age at assessment, years1.04 (1.02 to 1.07)<0.00011.07 (1.04 to 1.1)<0.00011.08 (1.04 to 1.10)<0.0001
Time from injury, years0.99 (0.93 to 1.05)0.650.93 (0.87 to 1.00)0.0510.94 (0.88 to 1.00)0.07
Physical activity0.48 (0.36 to 0.64)<0.00010.52 (0.39 to 0.70)<0.00010.89 (0.27 to 2.87)0.84
NS-SEC/rank, at sampling
  Senior rank (NS-SEC 1)(ref)(ref)(ref)
  Mid-rank (NS-SEC 2)2.22 (1.15 to 4.29)0.022.16 (1.10 to 4.27)0.032.17 (1.10 to 4.26)0.03
  Junior rank (NS-SEC 3)2.21 (1.19 to 4.12)0.012.91 (1.50 to 6.64)<0.0022.91 (1.51 to 5.62)0.001
Ethnicity (Caucasian)1.22 (0.72 to 2.07)0.471.83 (0.99 to 3.35)0.0521.83 (1.0 to 3.34)0.051
Heart rate-adjusted central augmentation index, %
Uninjured (ref)(ref)(ref)
 Injured2.37 (1.38 to 3.35)<0.00011.89 (0.93 to 2.86)<0.0001
Uninjured (ref)(ref)(ref)
 Injured (NISS <13)1.80 (0.60 to 3.01)0.0031.22 (0.04 to 2.39)0.04
 Injured (NISS ≥13)2.94 (1.74 to 4.15)<0.00012.59 (1.40 to 3.78)<0.0001
Age at assessment, years0.31 (0.22 to 0.40)<0.00010.42 (0.31 to 0.53)<0.00010.42 (0.31 to 0.53)<0.0001
Time from injury, years0.30 (0.07 to 0.54)0.010−0.02 (−0.27 to 0.22)0.85−0.002 (−0.25 to 0.24)0.99
Physical activity−3.12 (−4.15 to −2.10)<0.0001−2.37 (3.37 to 1.37)<0.0001−2.38 (−3.38 to −1.38)<0.0001
NS-SEC/rank, at sampling
 Senior rank (NS-SEC 1)(ref)(ref)(ref)
 Mid-rank (NS-SEC 2)4.34 (−0.03 to 2.36)<0.00013.58 (1.87 to 5.28)<0.00013.62 (1.92 to 5.33)<0.0001
 Junior rank (NS-SEC 3)3.76 (2.58 to 6.10)<0.00014.78 (3.18 to 6.38)<0.00014.78 (3.18 to 6.37)<0.0001
Ethnicity, Caucasian−2.34 (−4.05 to −0.64)0.007−1.08 (−2.80 to 0.64)0.22−1.09 (−2.81 to 0.63)0.21
  • NISS, New Injury Severity Score; NS-SEC, National Statistics Socio-Economic Classification; ref, reference; RR, risk ratio (from Poisson models with a robust variance).