Table 3 Associations between cumulative back pain score and spine modes (N = 1405).

From: Associations between back pain across adulthood and spine shape in early old age in a British birth cohort

Number of ages back pain was reported

Sex adjusted model

Fully-adjusted model¶,†

β (95%CI)

P trend

β (95%CI)

P trend

SM1

0

0

0.995

0

0.95

1

−0.06 (−0.18, 0.07)

 

−0.06 (−0.18, 0.07)

 

2

−0.01 (−0.16, 0.14)

 

−0.02 (−0.17, 0.14)

 

3–4

0.01 (−0.15, 0.17)

 

0.01 (−0.16, 0.17)

 

SM2

0

0

0.20

0

0.17

1

0.01 (−0.12, 0.14)

 

0.02 (−0.11, 0.15)

 

2

0.04 (−0.11, 0.19)

 

0.05 (−0.11, 0.2)

 

3–4

0.11 (−0.06, 0.28)

 

0.12 (−0.04, 0.29)

 

SM3

0

0

0.021

0

0.28

1

−0.1 (−0.21, 0.02)

 

−0.08 (−0.19, 0.03)

 

2

−0.13 (−0.27, 0.001)

 

−0.08 (−0.21, 0.06)

 

3–4

−0.13 (−0.28, 0.01)

 

−0.05 (−0.20, 0.09)

 

SM4

0

0

0.055

0

0.14

1

−0.04 (−0.17, 0.09)

 

−0.04 (−0.17, 0.09)

 

2

0.002 (−0.15, 0.15)

 

0.02 (−0.13, 0.18)

 

3–4

−0.21 (−0.38, −0.04)

 

−0.18 (−0.34, −0.01)

 

SM5

0

0

0.089

0

0.13

1

−0.05 (−0.18, 0.08)

 

−0.05 (−0.18, 0.08)

 

2

0.03 (−0.12, 0.18)

 

0.04 (−0.11, 0.19)

 

3–4

−0.20 (−0.37, −0.04)

 

−0.19 (−0.36, −0.02)

 

SM6

Men, n = 676

0

0

0.041

0

0.04

1

−0.21 (−0.39, −0.03)

 

−0.19 (−0.38, −0.01)

 

2

−0.33 (−0.55, −0.11)

 

−0.29 (−0.51, −0.07)

 

3–4

−0.10 (−0.34, 0.14)

 

−0.05 (−0.29, 0.20)

 

Women, n = 729

0

 

0.09

 

0.12

1

0.06 (−0.12, 0.24)

 

0.05 (−0.13, 0.23)

 

2

−0.08 (−0.28, 0.13)

 

−0.08 (−0.29, 0.13)

 

3–4

−0.20 (−0.43, 0.02)

 

−0.19 (−0.42, 0.04)

 

SM7

0

0

0.68

0

0.66

1

0.05 (−0.08, 0.18)

 

0.04 (−0.09, 0.17)

 

2

−0.06 (−0.22, 0.09)

 

−0.07 (−0.22, 0.09)

 

3–4

0.08 (−0.08, 0.25)

 

0.09 (−0.08, 0.26)

 

SM8

0

0

<0.001

0

<0.001

1

0.09 (−0.03, 0.22)

 

0.09 (−0.03, 0.21)

 

2

0.25 (0.11, 0.40)

 

0.23 (0.08, 0.38)

 

3–4

0.30 (0.14, 0.46)

 

0.27 (0.11, 0.43)

 
  1. SM: spine mode.
  2. Combined analyses presented except mode 6 which was sex-stratified, sex-interaction, p = 0.048 (unadjusted model); p value for test of heterogeneity across groups when there was evidence of a deviation from a linear trend; adjusted for sex, current BMI, spine aBMD, own occupational class, physical activity, GHQ-28 and number of children.