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. 2017 May 23;5:e3337. doi: 10.7717/peerj.3337

Table 2. Postoperative hypokalemia by demographic and clinical datas: univariate analysis.

Variables Patients (%) Hypokalemia (%) OR (95% CI) P value
Sex
Male 76 (42.0) 7 (9.2) 1.00 0.881
Female 105 (58.0) 9 (8.6) 0.92 (0.33–2.60)
Age
≤45 80 (44.2) 6 (7.5) 1.00 0.573
>45 101 (55.8) 10 (9.9) 1.36 (0.47–3.90)
Rural/urban geography
Urban 81 (44.8) 3 (3.7) 1.00 0.040
Rural 100 (55.2) 13 (13.0) 3.89 (1.07–14.14)
Length of stay
≤12 days 115 (63.5) 6 (5.2) 1.00 0.030
>12 days 66 (36.5) 10 (15.2) 3.24 (1.12–9.38)
Hypertension
No 146 (80.7) 8 (5.5) 1.00 0.003
Yes 35 (19.3) 8 (22.9) 5.11 (1.76–14.80)
Diabetes
No 162 (89.5) 12 (7.4) 1.00 0.059
Yes 19 (10.5) 4 (21.1) 3.33 (0.96–11.63)
Tumor size
≤1.0 cm 30 (16.6) 2 (6.7) 1.00 0.648
>1.0cm 151 (83.4) 14 (9.3) 1.43 (0.31–6.65)
Type
Nonfunctioning 66 (36.5) 2 (3.0) 1.00 0.054
Functioning 115 (63.5) 14 (12.2) 4.44 (0.98–20.17)
Type
Non-PRL 132 (72.9) 14 (10.6) 1.00 0.186
PRL 49 (27.1) 2 (4.1) 0.36 (0.08–1.64)
Type
Non-GH 153 (84.5) 14 (9.2) 1.00 0.732
GH 28 (15.5) 2 (7.1) 0.76 (0.16–3.56)
Type
Non-ACTH 165 (91.2) 8 (4.8) 1.00 <0.001
ACTH 16 (8.8) 8 (50.0) 19.63 (5.82–65.84)
Type
Non-FSH 172 (95.0) 16 (9.3) 1.00 0.722
FSH 9 (5.0) 0
Type
Non-TSH 176 (97.2) 15 (8.5) 1.00 0.391
TSH 5 (2.8) 1 (6.3) 2.68 (0.28–25.57)
Type
Non-Mix 173 (95.6) 15 (8.7) 1.00 0.711
Mix 8 (4.4) 1 (12.5) 1.51 (0.17–13.06)