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Table 4 Factors associated with incident myopia and premyopia

From: Prediction of premyopia and myopia in Chinese preschool children: a longitudinal cohort

Baseline Featuresa

Adjusted Hazard Ratiob

95% Confidence

Interval

P* Value

(for Trend)

Sex

 Male

Reference

  

 Female

1.073

0.806–1.429

0.628

Height (cm)

  < 97 (25th Percentile)

Reference

 

0.093

 97–103.2

0.654

0.444–0.963

0.031

  > 103.2 (75th Percentile)

0.657

0.406–1.064

0.088

Weight (kg)

  < 14.1 (25th Percentile)

Reference

 

0.652

 14.1–17.1

1.166

0.782–1.739

0.450

  > 17.1 (75th Percentile)

1.257

0.769–2.054

0.363

CP (diopter)

  < 42.50 (25th Percentile)

Reference

 

0.259

 42.50–44.35

1.383

0.911–2.102

0.128

  > 44.35 (75th Percentile)

1.629

0.877–3.025

0.122

AL (mm)

  < 21.42 (25th Percentile)

Reference

 

<  0.001

 21.42–22.33

2.875

1.706–4.842

<  0.001

  > 22.33 (75th Percentile)

4.916

2.537–9.527

<  0.001

AL/CR

  < 2.77 (25th Percentile)

Reference

 

<  0.001

 2.77–2.85

1.702

1.078–2.688

0.022

  > 2.85 (75th Percentile)

2.979

1.760–5.045

<  0.001

No. of parental myopia

 0

Reference

 

0.005

 1

1.093

0.791–1.510

0.590

 2

1.756

1.250–2.467

0.001

  1. Bold type indicated statistical significance
  2. Abbreviations: CP corneal power, AL axial length, CR corneal radius of curvature
  3. a Percentiles correspond to baseline examination values for all preschool children
  4. b Adjusted hazard ratios for each group adjusting for all other covariates
  5. *Determined using cox proportional hazard regression analysis