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Table 2 Select Baseline Demographic and Baseline Disease Characteristics of Responders and Non-Responders (Observed Cases)

From: Predictors of response to etanercept-methotrexate treatment: a post hoc logistic regression analysis of a randomized, open-label study in Latin American patients with rheumatoid arthritis

Baseline Characteristic*

Week 24

Week 128

Responders

(n = 66)

Non-responders

(n = 175)

p value**

Responders

(n = 91)

Non-responders

(n = 128)

p value**

Age, years

45.4 ± 11.8

49.2 ± 11.7

0.024

45.7 ± 11.8

50.1 ± 11.8

0.008

Men, n (%)

13 (20)

16 (9)

 

15 (17)

13 (10)

 

Women, n (%)

53 (80)

159 (91)

0.025

76 (84)

115 (90)

0.167

Race, n (%)

 White

34 (52)

77 (44)

0.622

46 (51)

57 (45)

0.015

 Mestizo

15 (23)

38 (22)

 

25 (28)

23 (18)

 

 African-Latin American

7 (11)

27 (15)

 

13 (14)

18 (14)

 

 Other

10 (15)

33 (19)

 

7 (8)

30 (23)

 

BMI, kg/m2

26.6 ± 5.3

26.3 ± 4.8

0.669

26.3 ± 4.4

26.4 ± 5.2

0.860

CRP, mg/L

19.5 ± 25.9

21.8 ± 25.4

0.521

22.5 ± 26.8

21.1 ± 26.1

0.707

ESR, mm/h

37.3 ± 11.2

44.3 ± 17.4

0.003

39.6 ± 13.8

43.1 ± 16.5

0.104

Disease duration, years

8.2 ± 7.1

7.4 ± 6.5

0.428

7.4 ± 6.4

8.0 ± 7.0

0.534

RF positive, n (%)

55 (83)

155 (89)

0.279

73 (80)

117 (91)

0.016

HAQ total score

1.3 ± 0.7

1.7 ± 0.7

0.001

1.5 ± 0.7

1.6 ± 0.7

0.376

VAS Pain, mm

60.0 ± 23.6

66.1 ± 20.3

0.047

61.6 ± 25.7

66.0 ± 18.2

0.141

PGA

6.5 ± 1.9

7.2 ± 1.9

0.013

6.7 ± 2.2

7.1 ± 1.8

0.122

SF-36 Mental Health Scale

41.0 ± 11.3

40.3 ± 11.0

0.665

41.5 ± 10.8

39.6 ± 11.3

0.223

Prorated number of tender joints

22.2 ± 10.9

26.0 ± 11.9

0.024

24.6 ± 11.1

25.5 ± 12.4

0.600

Prorated number of swollen joints

17.6 ± 7.9

18.4 ± 8.6

0.504

19.9 ± 8.9

17.3 ± 8.2

0.029

  1. *Data are mean ± SD unless stated otherwise
  2. **p value from either a one-way ANOVA model to analyze continuous characteristics or a chis-square test to analyze categorical characteristics; baseline characteristics with p values < 0.05 are highlighted in bold
  3. BMI body mass index, CRP C-reactive protein, ESR erythrocyte sedimentation rate, HAQ Health Assessment Questionnaire, PGA Physician Global Assessment, RF rheumatoid factor, SD standard deviation, SF-36 36-Item Short Form Survey, VAS visual analog scale