Table 4 Goodness-of-fit comparison of pre-vaccination age models.

From: Sex-specific effects of aging on humoral immune responses to repeated influenza vaccination in older adults

 

Base modelsa

Expanded modelsb

Age-sex interaction

–

+

–

+

H1N1

Linear age

1138.86

1140.69

1131.05

1132.87

Non-linear age

1144.47

1151.51

1136.73

1143.72

H3N2

Linear age

1693.38

1689.57

1666.94

1662.83

Non-linear age

1694.58

1694.83

1667.28

1667.95

B

Linear age

1398.31

1393.17

1355.04

1349.28

Non-linear age

1388.09

1378.85

1344.94

1337.26

  1. The lowest AIC, corresponding to the best-fit model, is bolded for each virus.
  2. aBase models controlled for study year.
  3. bExpanded models controlled for study year, frailty, and BMI.
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