Table 2

Evaluating the impact of potential confounders at baseline on hospitalisation outcome association with glycaemic category using trivariate regressions (ie, one confounder at a time) between variables in men and women

All-cause hospital admission by glycaemic categoryAdmission incidence OR* (95% CI)P valueAdmission rate IRR† (95% CI)P valueAdmission length (days) partial eta-squared‡P value
MenNormoglycaemia,  N=615IFG,  N=275Diabetes,  N=81
 Admitted, n (%)246 (40.00)137 (49.80)55 (67.90)
 Age in years, mean (SD)51.43 (16.89)60.01 (14.01)65.74 (9.74)1.05 (1.04 to 1.06) <0.001 1.04 (1.03 to 1.05) <0.001 0.160 <0.001
 BMI (kg/m2),  mean (SD)26.56 (3.74)28.42 (4.24)29.04 (4.30)1.04 (1.01 to 1.08) 0.008 1.04 (1.01 to 1.08) 0.006 0.011 0.001
 Current smoker, n (%)33 (33.70)17 (51.50)4 (40.00)0.74 (0.51 to 1.07)0.1151.07 (0.69 to 1.66)0.7310.0040.063
 High alcohol use, n (%)53 (38.40)35 (42.70)9 (69.20)0.83 (0.61 to 1.12)0.2380.74 (0.56 to 0.99) 0.045 0.0020.160
 Low mobility, n (%)69 (38.30)44 (51.80)27 (66.70)0.96 (0.73 to 1.27)0.9661.40 (1.05 to 1.87) 0.021 <0.0010.723
 IRSAD0.89 (0.81 to 0.97) 0.016 0.81 (0.74 to 0.89) <0.001 0.007 0.010
WomenNormoglycaemia,  N=694IFG,  N=159Diabetes,  N=71
 Admitted, n (%)277 (39.90)79 (49.70)48 (67.60)
 Age in years, mean (SD)49.53 (18.26)61.83 (14.73)65.03 (13.11)1.03 (1.02 to 1.03) <0.001 1.03 (1.02 to 1.03) <0.001 0.098 <0.001
 BMI (kg/m2), mean (SD)26.59 (5.16)30.16 (5.98)31.23 (7.19)1.00 (0.97 to 1.02)0.7811.01 (0.98 to 1.04)0.4340.0010.433
 Current smoking, n (%)34 (41.00)21 (38.10)5 (80.00)0.96 (0.64 to 1.45)0.8590.84 (0.58 to 1.19)0.3360.0010.437
 High alcohol use, n (%)15 (33.30)3 (33.30)0 (0.00)0.65 (0.36 to 1.17)0.1550.49 (0.29 to 0.82) 0.007 0.0010.278
 Low mobility, n (%)82 (67.80)25 (52.1)27 (81.80)2.99 (2.14 to 4.18) <0.001 2.53 (1.69 to 3.74) <0.001 0.089 <0.001
 IRSAD0.86 (0.78 to 0.95) 0.004 0.90 (0.81 to 1.00)0.0690.009 0.004
  • *Trivariate logistic regression.

  • †Trivariate Poisson regression.

  • ‡Two-way ranked analysis of variance. Significant p values (p<0.05) are shown in bold.

  • BMI, body mass index; IFG, impaired fasting glucose; IRR, Incidence rate ratio; IRSAD, Index of Relative Socioeconomic Advantage and Disadvantage.