Table 2 Hazard ratios (95% confidence intervals) for the occurrence of menarche based on 1-standard deviation for dietary intakes of protein-containing food groups

Total protein

1.15 (0.99–1.34)

1.28 (0.81–2.03)

1.22 (0.78–1.93)

 p-value

0.068

0.293

0.385

Animal protein

1.14 (0.94–1.39)

1.44 (1.07–1.94)

1.36 (1.01–1.84)

 p-value

0.173

0.015

0.042

Plant protein

1.17 (0.99–1.38)

0.65 (0.46–0.93)

0.68 (0.48–0.98)

 p-value

0.066

0.018

0.040

Fat food

1.10 (0.91–1.32)

1.01 (0.80–1.26)

0.96 (0.77–1.20)

 p-value

0.314

0.955

0.719

Red meat

1.04 (0.83–1.33)

1.16 (0.90–1.49)

1.12 (0.87–1.44)

 p-value

0.715

0.248

0.375

Poultry

1.06 (0.79–1.41)

1.40 (1.04–1.88)

1.35 (1.00–1.82)

 p-value

0.709

0.028

0.049

Fish

1.17 (0.93–1.47)

0.96 (0.75–1.23)

0.93 (0.72–1.20)

 p-value

0.188

0.750

0.577

Organ meat

1.02 (0.74–1.40)

0.89 (0.63–1.26)

0.86 (0.61–1.22)

 p-value

0.913

0.518

0.404

Egg

1.09 (0.91–1.31)

1.19 (0.99–1.43)

1.16 (0.97–1.40)

 p-value

0.334

0.070

0.109

Legumes

1.08 (0.91–1.27)

0.90 (0.74–1.10)

0.95 (0.77–1.18)

 p-value

0.400

0.316

0.651

Low-fat dairy

1.12 (0.94–1.34)

1.24 (1.03–1.50)

1.20 (0.99–1.46)

 p-value

0.215

0.025

0.064

High-fat dairy

0.96 (0.80–1.15)

0.88 (0.72–1.07)

0.90 (0.73–1.10)

 p-value

0.629

0.195

0.307

Total dairy

1.04 (0.87–1.25)

1.07 (0.86–1.33)

1.06 (0.85–1.33)

 p-value

0.628

0.547

0.576