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Table 1 Baseline participant characteristics by LTRA use in normal, MCI, and AD groups following propensity score matching

From: Leukotriene receptor antagonist use and cognitive decline in normal cognition, mild cognitive impairment, and Alzheimer’s dementia

 

Normal

MCI

AD

User (n = 350)

Non-user (n = 1050)

SMD

p value

User (n = 200)

Non-user (n = 600)

SMD

p value

User (n = 151)

Non-user (n = 453)

SMD

p value

Baseline demographics

 Age (years)

70.30 (9.71)

70.37 (9.56)

0.007

0.904

73.75 (8.86)

73.94 (8.76)

0.021

0.795

75.35 (9.73)

75.24 (10.13)

0.011

0.907

 Female

261 (74.6%)

793 (75.5%)

0.022

0.775

110 (55.0%)

321 (53.5%)

0.030

0.774

93 (61.6%)

265 (58.5%)

0.063

0.566

 BMI (kg/m2)

29.41 (6.21)

29.70 (6.78)

0.045

0.475

27.82 (5.54)

27.92 (6.17)

0.018

0.831

27.03 (6.05)

26.93 (5.08)

0.018

0.842

 Education (years)

15.77 (3.29)

15.81 (2.82)

0.013

0.822

15.23 (3.32)

15.15 (3.27)

0.024

0.770

13.87 (4.51)

14.03 (3.77)

0.038

0.670

 Smoking history (total years smoked > 0)

158 (45.1%)

471 (44.9%)

0.006

0.975

86 (43.0%)

273 (45.5%)

0.050

0.594

60 (39.7%)

199 (43.9%)

0.085

0.420

Dementia measures

 CDR global score

  

0.019

0.838

  

0.065

0.697

  

0.119

0.659

  0

316 (90.3%)

942 (89.7%)

  

25 (12.5%)

72 (12.0%)

  

0 (0.0%)

0 (0.0%)

  

  0.5

34 (9.7%)

108 (10.3%)

  

172 (86.0%)

523 (87.2%)

  

58 (38.4%)

200 (44.2%)

  

  1

0 (0.0%)

0 (0.0%)

  

3 (1.5%)

5 (0.8%)

  

61 (40.4%)

168 (37.1%)

  

  2

0 (0.0%)

0 (0.0%)

  

0 (0.0%)

0 (0.0%)

  

28 (18.5%)

73 (16.1%)

  

  3

0 (0.0%)

0 (0.0%)

  

0 (0.0%)

0 (0.0%)

  

4 (2.6%)

12 (2.6%)

  

APOE ε4 carrier

116 (33.1%)

347 (33.0%)

0.002

1.000

84 (42.0%)

247 (41.2%)

0.017

0.901

81 (53.6%)

252 (55.6%)

0.040

0.741

 Vascular dementia

0 (0.0%)

0 (0.0%)

< 0.001

-

7 (3.5%)

29 (4.8%)

0.067

0.555

6 (4.0%)

14 (3.1%)

0.048

0.793

 AD medication use

0 (0.0%)

0 (0.0%)

< 0.001

-

52 (26.0%)

155 (25.8%)

0.004

> 0.999

100 (66.2%)

302 (66.7%)

0.009

> 0.999

Other respiratory medication use

 Allergy medications

152 (43.4%)

477 (45.4%)

0.040

0.556

82 (41.0%)

240 (40.0%)

0.020

0.868

51 (33.8%)

163 (36.0%)

0.046

0.694

 COPD medications

27 (7.7%)

58 (5.5%)

0.088

0.175

27 (13.5%)

65 (10.8%)

0.082

0.370

17 (11.3%)

48 (10.6%)

0.021

0.940

 Rescue inhaler for asthma

82 (23.4%)

178 (17.0%)

0.162

0.009

40 (20.0%)

129 (21.5%)

0.037

0.726

36 (23.8%)

92 (20.3%)

0.085

0.421

 Maintenance inhaler for asthma

136 (38.9%)

350 (33.3%)

0.115

0.070

78 (39.0%)

211 (35.2%)

0.079

0.372

49 (32.5%)

140 (30.9%)

0.033

0.800

  1. Continuous variables expressed as mean (standardized deviation); categorical variables expressed as counts (proportion)
  2. Abbreviations: AD Alzheimer’s disease, BMI body mass index, COPD chronic obstructive pulmonary disease, MCI mild cognitive impairment, and SMD standardized mean difference