Table 8 Associations of IGF-1 and IGF-binding proteins with STC2, mutually adjusted for other members of the system members*.

From: Pregnancy associated plasma protein-A2 (PAPP-A2) and stanniocalcin-2 (STC2) but not PAPP-A are associated with circulating total IGF-1 in a human adult population

 

n

β (95% CI) per 10 ng/mL§

95% CI

IGF-1, ng/ml

As in Table 7

394

− 2.4

(− 4.7, − 0.2)

- Plus adjustment for PAPP-A2

394

− 2.1

(− 4.3, 0.1)

- Plus adjustment for PAPP-A (< LOD substituted, log-transformed)

394

− 2.3

(− 4.5, − 0.1)

- Plus adjustment for PAPP-A (< LOD substituted, log-transformed) and PAPP-A2

394

− 1.9

(− 4.1, 0.3)

- Plus adjustment for IGFBP-2

394

− 3.0

(− 5.2, − 0.8)

- Plus adjustment for IGFBP-3

394

− 1.4

(− 3.4, 0.6)

In participants with available IGFBP-1

360

− 2.1

(− 4.4, 0.2)

- Plus adjustment for IGFBP-1 (log-transformed)

360

− 0.9

(− 3.1, 1.3)

In participants with available IGFBP-5

125

− 2.0

(− 6.0, 2.2)

- Plus adjustment for IGFBP-5 (log-transformed)

125

− 1.7

(− 5.7, 2.3)

In participants with available free IGF-1

339

− 2.0

(− 4.5, 0.5)

- Plus adjustment for free IGF-1 (log-transformed)

339

− 2.3

(− 4.8, 0.1)

IGFBP-1, ng/mL‡║

As in Table 7

360

1.07

(1.03, 1.11)

- Plus adjustment for PAPP-A2

360

1.06

(1.03, 1.11)

- Plus adjustment for PAPP-A (< LOD substituted, log-transformed)

360

1.07

(1.03, 1.11)

- Plus adjustment for PAPP-A (< LOD substituted, log-transformed) and PAPP-A2

360

1.07

(1.03, 1.10)

- Plus adjustment for IGF-1

360

1.06

(1.02, 1.10)

- Plus adjustment for IGFBP-2

360

1.09

(1.05, 1.13)

In participants with available IGFBP-5

116

1.09

(1.02, 1.16) 

- Plus adjustment for IGFBP-5 (log-transformed)

116

1.09

(1.02, 1.16)

In participants with available free IGF-1

309

1.04

(1.00, 1.08)

- Plus adjustment for free IGF-1 (log-transformed)

309

1.04

(1.00, 1.09)

- Plus adjustment for free to total IGF-1 (%, log-transformed)

309

1.04

(1.00, 1.09)

IGFBP-2, ng/ml

As in Table 7

394

− 8.9

(− 14.5, − 3.3)

- Plus adjustment for PAPP-A2

394

− 10.2

(− 15.7, − 4.6)

- Plus adjustment for PAPP-A (< LOD substituted, log-transformed)

394

− 8.4

(− 14.0, − 2.7)

- Plus adjustment for PAPP-A (< LOD substituted, log-transformed) and PAPP-A2

394

− 9.7

(− 15.3, − 4.1)

- Plus adjustment for IGF-1

394

− 9.9

(− 15.5, − 4.3)

- Plus adjustment for IGFBP-3

394

− 10.5

(− 16.0, − 5.1)

In participants with available free IGF-1

339

− 13.9

(− 19.9, − 8.0)

- Plus adjustment for free IGF-1 (log-transformed)

339

− 13.5

(− 19.5, − 7.6)

- Plus adjustment for free to total IGF-1 (%, log-transformed)

339

− 13.6

(− 19.5, − 7.6)

In participants with available IGFBP-1

360

− 9.6

(− 15.4, − 3.7)

- Plus adjustment for IGFBP-1 (log-transformed)

360

− 12.7

(− 18.4, − 7.1)

In participants with available IGFBP-5

125

− 13.6

(− 23.4, − 3.7)

- Plus adjustment for IGFBP-5 (log-transformed)

125

− 13.3

(− 23.1, − 3.4)

IGFBP-3, ng/ml

As in Table 7

394

− 24.9

(− 48.8, − 1.0)

- Plus adjustment for PAPP-A2

394

− 22.6

(− 46.6, 1.4)

- Plus adjustment for PAPP-A (< LOD substituted, log-transformed)

394

− 25.7

(− 49.8, − 1.5)

- Plus adjustment for PAPP-A (< LOD substituted, log-transformed) and PAPP-A2

394

− 23.3

(− 47.5, 1.0)

- Plus adjustment for IGF-1

394

− 12.8

(− 34.1, 8.6)

- Plus adjustment for IGFBP-2

394

− 35.4

(− 58.7, − 12.2)

In participants with available free IGF-1

339

− 5.5

(− 31.2, 20.2)

-  Plus adjustment for free IGF-1 (log-transformed)

339

− 7.0

(− 32.6, 18.6)

- Plus adjustment for free to total IGF-1 (%, log-transformed)

339

− 5.6

(− 31.4, 20.3)

In participants with available IGFBP-1

360

− 24.9

(− 49.6, − 0.2)

- Plus adjustment for IGFBP-1 (log-transformed)

360

− 15.8

(− 40.3, 8.8)

In participants with available IGFBP-5

125

- 6.3

(− 46.7, 34.1)

- Plus adjustment for IGFBP-5 (log-transformed)

125

− 6.0

(− 46.6, 34.7)

  1. *Adjusted for age, sex, BMI, and pretest and IGF-1/IGFBPs/PAPP-A/PAPP-A2 as indicated.
  2. Models for IGFBP-1 were additionally adjusted for fasting status (≥ 6 h, yes vs no).
  3. IGFBP-1 β estimates per 10 ng/mL STC2 increment were back-transformed from the logarithmic to the original scale; back transformed estimates can be interpreted as x-fold IGFBP-1 concentrations associated with 10 ng/mL higher STC2.
  4. Significant values are in bold.