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. 2019 Jun 9;9(6):e028170. doi: 10.1136/bmjopen-2018-028170

Table 3.

Univariable logistic regression model: prevalence of patients with omissions of all medicines and χ2 tests

Variable Omissions (excluding VCR) χ2 Test Omissions excluding (VCR and PR) χ2 Test
Observed prevalence (%) OR (95% CI) Sig. Observed prevalence (%) OR (95% CI) Sig.
Gender
 Male 791/2766 (29) 1.00 (reference) χ2 (1)=5.619, p=0.018 404/2766 (15) 1.00 (reference) χ2 (1)=0.139, p=0.709
 Female 926/2942 (32) 1.15 0.018 448/2942 (15) 1.02 (0.92 to 1.14) 0.709
Patient age group
 <18* 10/84 (12) 1.00 (reference) χ2 (5)=18.581, p=0.002 7/84 (8) 1.00 (reference) χ2 (5)=18.581, p=0.002
 18–24 27/109 (25) 2.44 0.027 10/109 (9) 2.76 (1.30 to 5.88) 0.009
 25–44 140/453 (31) 3.31 (1.66 to 6.60) 0.001 61/453 (14) 4.54 (2.34 to 8.79) 0.000
 45–59 219/692 (32) 3.43 (1.74 to 6.76) 0.000 108/692 (16) 3.92 (2.04 to 7.53) 0.000
 60–74 406/1373 (30) 3.11 (1.59 to 6.07) 0.001 178/1373 (13) 3.54 (1.86 to 6.75) 0.000
 >75 915/2997 (31) 3.25 (1.63 to 6.32) 0.001 488/2997 (16) 3.83 (2.02 to 7.25) 0.000
Patients’ number of medicines group
 1–4* 185/984 (19) 1.00 (reference) χ2 (4)=115.877, p<0.001 76/984 (8) 1.00 (reference) χ2 (4)=30.383, p<0.001
 5–9 669/2352 (28) 1.72 (1.43 to 2.06) 0.000 326/2352 (14) 1.77 (1.50 to 2.10) 0.000
 10–14 616/1753 (35) 2.34 (1.94 to 2.82) 0.000 331/1753 (19) 2.13 (1.79 to 2.54) 0.000
 15–19 206/519 (40) 2.84 (2.24 to 3.61) 0.000 100/519 (19) 2.23 (1.78 to 2.81) 0.000
 >20 41/100 (41) 3.001 (1.95 to 4.61) 0.000 19/100 (19) 2.67 (1.76 to 4.06) 0.000
Ward specialty
 Medical 929/3434 (27) 1.00 (reference) χ2 (2)=48.269, p<0.001 512/3434 (15) 1.00 (reference) χ2 (2)=34.091, p<0.001
 Surgical 743/2086 (36) 1.49 (1.33 to 1.68) 0.000 326/2086 (16) 1.32 (1.18 to 1.48) 0.000
 Other 45/188 (24) 0.85 (0.60 to 1.20) 0.348 14/188 (7) 0.65 (0.46 to 0.91) 0.011
Medicines reconciliation
 Initiated 1169/4053 (29) 1.00 (reference) χ2 (1)=10.176, p=0.001 580/4053 (14) 1.00 (reference) χ2 (1)=16.427, p<0.001
 Not initiated 548/1655 (33) 1.22 (1.09 to 1.38) 0.000 272/1655 (16) 1.28 (1.14 to 1.44) 0.000
Total prevalence 1717/5708 (30) 852/5708 (15)

*Reference group for each predictor.

†Medicines reconciliation initiation: medicines reconciliation has been initiated since admission to the ward at the time of survey.

PR, patient refusal; Sig., significance; VCR, valid clinical reason.