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Table 3 Treatment patterns of nab-paclitaxel initiators by line of therapya

From: The treatment patterns, efficacy, and safety of nab®-paclitaxel for the treatment of metastatic breast cancer in the United States: results from health insurance claims analysis

Variable

First line (n = 172)

Second line (n = 211)

Third or later line (n = 281)

All (N = 664)

 

n

%

n

%

n

%

n

%

Treatment regimen

        

 Monotherapy

109

63.4

129

61.1

167

59.4

405

61.0

 Combination chemotherapy

63

36.6

82

38.9

114

40.6

259

39.0

  Bevacizumab

51

81.0

53

64.6

45

39.5

149

57.5

  Trastuzumab or lapatinib

3

4.8

14

17.1

45

39.5

62

23.9

  Gemcitabine, carboplatin, pegylated liposomal doxorubicin/doxorubicin, docetaxel, doxorubicin, paclitaxel, irinotecan, vinorelbine, or 5-fluorouracil

3

4.8

8

9.8

14

12.3

25

9.7

  ≥ 2 agents from above list

6

9.5

7

8.5

10

8.8

23

8.9

Treatment scheduleb

152

 

193

 

260

 

605

 

 Weekly

114

75.0

134

69.4

180

69.2

428

70.7

 q3w

38

25.0

59

30.6

80

30.8

177

29.3

 

Median

IQR

Median

IQR

Median

IQR

Median

IQR

Duration of line treatment, d

159.0

(83.0–241.0)

119.0

(65.0–191.0)

122.0

(76.0–191.0)

128.0

(76.0–199.0)

Initial dose, unitc

200.0

(200.0–429.0)

200.0

(200.0–400.0)

200.0

(200.0–400.0)

200.0

(200.0–400.0)

Average dose, unitc

227.5

(200.0–394.4)

220.0

(200.0–400.0)

214.9

(200.0–400.0)

218.5

(200.0–400.0)

  1. IQR interquartile range, q3w every 3 weeks
  2. aData are from the Optum Research Database, January 1, 2005 to September 30, 2012
  3. b59 patients (20 in first-line, 18 in second-line, and 21 in third-line or later therapy) could not be classified into a weekly or q3w treatment schedule
  4. cEach unit is equivalent to 1 mg. The dosage calculated may not reflect the exact dose dispensed or received