The association between oral carbohydrate intake before orthopedic surgery for osteoporotic fractures and outcomes in elderly patients

Table 3 Subgroup Analyses of the Association between CHO and Mortality

Subgroup	N	OR (95% CI) P-value	P-value for interaction
Sex			0.97
Female	324	0.30 (0.05, 1.65) 0.1650
Male	204	0.28 (0.07, 1.22) 0.0911
Age tertile			0.61
Low	159	0.00 (0.00, Inf) 0.9998
Middle	180	110.06 (0.00, Inf) 0.9999
High	189	0.27 (0.09, 0.86) 0.0266
BMI tertile			0.06
Low	175	0.87 (0.22, 3.48) 0.8412
Middle	177	0.03 (0.00, 0.55) 0.0177
High	176	0.00 (0.00, Inf) 0.9985
Fracture site			0.78
Spine	205	0.03 (0.00, 5.20) 0.1800
Hip	231	0.32 (0.10, 0.99) 0.0475
Proximal humerus	18	1.00 (0.00, Inf) 1.0000
Wrist	74	1.00 (0.00, Inf) 1.0000
Anesthesia			0.95
General anesthesia	236	0.41 (0.06, 3.00) 0.3792
Spinal anesthesia	204	0.28 (0.08, 1.00) 0.0499
Brachial plexus block anesthesia	88	1.00 (0.00, Inf) 1.0000
Potassium tertile			0.36
Low	174	inf. (0.00, Inf) 0.9930
Middle	173	0.07 (0.01, 0.73) 0.0265
High	181	0.53 (0.09, 3.08) 0.4831
Magnesium tertile			0.56
Low	163	0.37 (0.01, 10.62) 0.5613
Middle	184	0.03 (0.00, 3.91) 0.1624
High	181	0.36 (0.09, 1.43) 0.1444
Serum creatinine tertile			0.16
Low	176	0.66 (0.19, 2.37) 0.5268
Middle	172	0.00 (0.00, Inf) 0.9808
High	180	0.00 (0.00, Inf) 0.9948

Adjusted for age, sex, fracture site, serum magnesium, BMI, anesthesia, serum potassium, and serum creatinine except the subgroup variable
OR odds ratio, CI confidence interval, CHO carbohydrate, and BMI body mass index

ISSN: 1749-799X