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Table 6 Univariate logistic regression of grade ≥ 3 toxicity during therapy related to risks in long-term medication (n = 113); distribution of CTCAE grade ≥ 3 toxicity in patients during therapy course per medication risks

From: Medication risks in older patients (70 +) with cancer and their association with therapy-related toxicity

 

Odds ratio

(95% CI)

P value

Number of patients with toxicity/number of all patients (%) with vs without medication risk

Overall toxicity

 Number of drugs per patient

1.15 (0.98–1.34)

0.090

-

 Patients with vs without (reference) polymedication

1.52 (0.58–3.95)

0.391

49/58 (84.5) vs 43/55 (78.2)

 Number of PIM per patient

1.23 (0.71–2.13)

0.460

-

 Patients with vs without (reference) at least one PIM

1.31 (0.51–3.39)

0.578

50/60 (83.3) vs 42/53 (79.2)

 Number of rPDDI per patient

3.84 (0.97–15.31)

0.056

-

 Patients with vs without (reference) at least one rPDDI

5.07 (1.11–23.14)

0.036

32/34 (94.1) vs 60/79 (75.9)

Hematological toxicity

 Number of drugs per patient

1.04 (0.93–1.16)

0.511

-

 Patients with vs without (reference) polymedication

1.17 (0.53–2.58)

0.691

40/58 (69.0) vs 36/55 (65.5)

 Number of PIM per patient

0.91 (0.60–1.36)

0.642

-

 Patients with vs without (reference) at least one PIM

0.94 (0.43–2.08)

0.887

40/60 (66.7) vs 36/53 (67.9)

 Number of rPDDI per patient

1.59 (0.90–2.80)

0.111

-

 Patients with vs without (reference) at least one rPDDI

3.95 (1.38–11.29)

0.010

29/34 (85.3) vs 47/79 (59.5)

Nonhematological toxicity

 Number of drugs per patient

1.14 (1.01–1.28)

0.029

-

 Patients with vs without (reference) polymedication

1.47 (0.69–3.12)

0.318

37/58 (63.8) vs 30/55 (54.5)

 Number of PIM per patient

1.68 (1.05–2.67)

0.030

-

 Patients with vs without (reference) at least one PIM

1.93 (0.90–4.12)

0.091

40/60 (66.7) vs 27/53 (50.9)

 Number of rPDDI per patient

1.59 (0.95–2.66)

0.076

-

 Patients with vs without (reference) at least one rPDDI

1.66 (0.72–3.87)

0.238

23/34 (67.6) vs 44/79 (55.7)

  1. Reference: in italic; if no reference is given the variable was treated as continuous; Polymedication: ≥ 5 long-term drugs per patient