Table 3 Correlation coefficients (r2) and p values for frailty items with life expectancy.

From: Age and life expectancy clocks based on machine learning analysis of mouse frailty

Item

r2

p value

Age (days)

0.35

<0.001

Tremor

0.25

<0.001

Body condition score

0.20

<0.001

Gait disorders

0.19

<0.001

Tail stiffening

0.19

<0.001

Breathing rate/depth

0.17

<0.001

Hearing loss

0.17

<0.001

Kyphosis

0.12

<0.001

Distended abdomen

0.11

<0.001

Menace reflex

0.08

<0.001

% twc

0.07

<0.001

Forelimb grip strength

0.07

<0.001

Alopecia

0.05

<0.001

Threshold % rwc

0.04

<0.001

Microphthalmia

0.03

<0.001

Body weight score

0.03

<0.001

Coat condition

0.03

<0.001

Diarrhea

0.03

0.01

Mouse grimace scale

0.02

0.01

Loss of fur color

0.02

0.01

Dermatitis

0.02

0.03

Piloerection

0.02

0.03

% rwc

0.01

0.06

Rectal prolapse

0.01

0.07

Penile prolapse

0.01

0.11

Tumors

0.01

0.13

Eye discharge swelling

0.01

0.17

Vestibular disturbance

0.01

0.19

Vision loss

0.01

0.27

Cataracts

0.00

0.38

Corneal capacity

0.00

0.44

Loss of whiskers

0.00

0.51

Nasal discharge

0.00

1.00

  1. Twc total weight change, rwc recent weight change. Correlation (r2) determined by Pearson correlation coefficients.