Table 4 Stratified comparison within boys born to syphilis-infected mothers

Length (cm)

at birth

49.98 ± 1.03^a

49.14 ± 1.93^{a, b,c}

49.77 ± 1.24

49.52 ± 1.40

50.08 ± 1.50^b

50.08 ± 1.11^c

2.172

0.058

3 months

62.54 ± 1.57

61.95 ± 1.86

62.58 ± 2.44

62.58 ± 2.65

62.98 ± 2.67

62.90 ± 2.37

0.673

0.644

6 months

68.94 ± 1.85

68.24 ± 1.92

68.22 ± 2.15

68.55 ± 2.37

68.58 ± 2.43

68.91 ± 1.82

0.652

0.660

9 months

72.52 ± 2.54

71.75 ± 1.73

72.25 ± 2.77

72.42 ± 1.90

71.93 ± 2.39

72.57 ± 1.79

0.483

0.788

12 months

76.83 ± 2.48

76.19 ± 1.97

76.82 ± 2.65

77.35 ± 2.23

76.53 ± 3.07

76.84 ± 2.04

0.426

0.830

15 months

80.25 ± 1.75

79.36 ± 2.16

81.00 ± 1.51

80.42 ± 2.35

82.00 ± 3.03

80.60 ± 1.45

1.490

0.209

18 months

83.57 ± 1.90

79.25 ± 2.75^{b, d}

82.11 ± 2.89

84.90 ± 2.96^d

86.17 ± 4.07^b

83.44 ± 1.90

4.275

0.003

Weight (kg)

at birth

3.57 ± 0.48^{a, e}

3.11 ± 0.53^{a, b,c}

3.39 ± 0.52

3.30 ± 0.72^e

3.53 ± 0.56^b

3.48 ± 0.42^c

2.926

0.014

3 months

7.10 ± 0.62

6.82 ± 0.72

6.71 ± 0.56

7.01 ± 0.77

6.97 ± 0.88

7.00 ± 0.82

1.056

0.387

6 months

8.71 ± 0.81

8.53 ± 1.00

8.30 ± 0.81

8.82 ± 1.16

8.37 ± 1.04

8.66 ± 0.90

1.315

0.260

9 months

9.77 ± 0.85

9.68 ± 1.20

9.50 ± 1.10

9.79 ± 1.18

9.29 ± 1.10

9.77 ± 0.87

0.930

0.464

12 months

10.69 ± 0.93

10.62 ± 0.94

10.29 ± 0.89

10.89 ± 1.27

10.07 ± 1.04

10.51 ± 0.88

1.440

0.216

15 months

11.50 ± 0.68

11.50 ± 1.31

11.08 ± 0.69

11.68 ± 1.28

11.52 ± 1.34

11.58 ± 0.63

0.364

0.871

18 months

12.03 ± 0.82

10.98 ± 0.50

11.77 ± 1.24

12.57 ± 1.28

12.74 ± 1.33

12.11 ± 0.92

1.843

0.123