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 category | Admission incidence OR* (95% CI) | P value | Admission rate IRR† (95% CI) | P value | Admission length (days) partial eta-squared‡ | P value | |||
| Men | Normoglycaemia, N=615 | IFG, N=275 | Diabetes, 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) | 0.115 | 1.07 (0.69 to 1.66) | 0.731 | 0.004 | 0.063 |
| High alcohol use, n (%) | 53 (38.40) | 35 (42.70) | 9 (69.20) | 0.83 (0.61 to 1.12) | 0.238 | 0.74 (0.56 to 0.99) | 0.045 | 0.002 | 0.160 |
| Low mobility, n (%) | 69 (38.30) | 44 (51.80) | 27 (66.70) | 0.96 (0.73 to 1.27) | 0.966 | 1.40 (1.05 to 1.87) | 0.021 | <0.001 | 0.723 |
| IRSAD | – | – | – | 0.89 (0.81 to 0.97) | 0.016 | 0.81 (0.74 to 0.89) | <0.001 | 0.007 | 0.010 |
| Women | Normoglycaemia, N=694 | IFG, N=159 | Diabetes, 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) | 0.781 | 1.01 (0.98 to 1.04) | 0.434 | 0.001 | 0.433 |
| Current smoking, n (%) | 34 (41.00) | 21 (38.10) | 5 (80.00) | 0.96 (0.64 to 1.45) | 0.859 | 0.84 (0.58 to 1.19) | 0.336 | 0.001 | 0.437 |
| High alcohol use, n (%) | 15 (33.30) | 3 (33.30) | 0 (0.00) | 0.65 (0.36 to 1.17) | 0.155 | 0.49 (0.29 to 0.82) | 0.007 | 0.001 | 0.278 |
| 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 |
| IRSAD | – | – | – | 0.86 (0.78 to 0.95) | 0.004 | 0.90 (0.81 to 1.00) | 0.069 | 0.009 | 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.