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. 2017 May 25;7(5):e015857. doi: 10.1136/bmjopen-2017-015857

Table 3.

Associations between baseline characteristics and monthly shortness of breath (n=661)

Baseline characteristics Monthly shortness of breath
1–3 weeks versus none 4 weeks versus none
Unadjusted
RRR (95% CI)
Adjusted*
RRR (95% CI)
Unadjusted
RRR (95% CI)
Adjusted*
RRR (95% CI)
Male 1 1 1 1
Female 1.84 (1.36 to2.49) 1.46 (1.07 to2.01) 2.58 (1.78 to 3.75) 1.81 (1.20 to 2.75)
Age
 <60 1 1 1 1
 60–69 1.30 (0.81 to 2.07) 1.18 (0.74 to 1.90) 1.10 (0.62 to 1.95) 0.92 (0.49 to 1.71)
 70–79 1.80 (1.14 to 2.83) 1.83 (1.15 to2.90) 1.40 (0.80 to 2.44) 1.72 (0.94 to 3.17)
 80+ 1.91 (1.10 to 3.31) 2.47 (1.41 to 4.34) 1.53 (0.77 to 3.02) 2.51 (1.19 to 5.26)
BMI
 Normal 1 1 1 1
 Overweight 1.25 (0.88 to 1.76) 1.28 (0.90 to 1.81) 1.02 (0.66 to 1.58) 1.03 (0.64 to 1.65)
 Obese 1.77 (1.20 to2.62) 1.67 (1.12 to2.51) 2.93 (1.80 to4.78) 2.53 (1.49 to 4.30)
PCS score (per unit) 0.93 (0.92 to0.94) 0.87 (0.86 to0.89)
Not anxious or depressed 1 1 1 1
Anxious or depressed 3.04 (2.26 to 4.08) 2.33 (1.70 to 3.19) 5.36 (3.67 to 7.82) 4.10 (2.72 to 6.17)
Pain sites
 None 1 1 1 1
 1–3 2.23 (1.41 to3.54) 1.98 (1.23 to3.17) 4.06 (2.20 to7.50) 3.50 (1.80 to 6.80)
 4+ 4.31 (2.74 to 6.80) 3.05 (1.88 to4.97) 8.90 (4.87 to16.29) 4.64 (2.35 to 9.18)
Between-person
variance
2.09 3.72

Bold values mean statistically significant.

*Adjusted for all presented variables.

BMI, body mass index; PCS, Physical Component Summary; RRR, relative risk ratio.