Table 3 Multiple logistic regression analysis for the association between serum 25(OH)D concentration and pterygium prevalence in the Korean population

  > 30

1.519 (1.016–2.271)

1.515 (1.01–2.274)

1.565 (1.035–2.366)

 25–30

1.543 (1.097–2.168)

1.536 (1.091–2.163)

1.545 (1.086–2.198)

 20–25

1.819 (1.403–2.357)

1.806 (1.393–2.342)

1.8 (1.358–2.386)

 15–20

1.553 (1.248–1.933)

1.544 (1.238–1.925)

1.535 (1.216–1.938)

  < 15

1

1

1

  > 5

1.683 (1.337–2.117)

1.689 (1.342–2.126)

1.761 (1.395–2.223)

 2–5

1.126 (0.889–1.427)

1.126 (0.89–1.425)

1.129 (0.877–1.453)

  < 2

1

1

1