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Table 1 Newborn’s anthropometric measures at birth by maternal characteristics in the BAPC project

From: The effect of quitting water pipe during pregnancy on anthropometric measurements at birth: a population-based prospective cohort study in the south of Iran

Variable

N(%)

Weight in grams

Mean (SD)

Length in centimeters

Mean (SD)

Head circumference in centimeters

Mean (SD)

Demographic characteristics

Maternal age

  > 15

3 (0.27)

2666.66 (351.18)

47.33 (2.08)

40.97 (0.19)

  16–25

439 (39.20)

3033.03 (499.29)

48.50 (2.48)

41.31 (2.67)

  26–35

583 (52.05)

3015.00 (551.12)

48.30 (2.84)

41.26 (2.48)

  < 35

95 (8.48)

3040.42 (537.74)

48.71 (1.95)

41.36 (2.70)

Maternal education

  illiterate

51 (4.55)

3121.96 (704.28)

48.29 (2.80)

41.37 (2.70)

  Below diploma

916 (81.79)

3016.72 (531.46)

48.38 (2.61)

41.29 (2.59)

  academic

153 (13.66)

3029.73 (444.95)

48.66 (2.72)

41.23 (2.40)

Maternal job

  With income

28 (2.5)

2987.14 (405.61)

48.53 (2.45)

40.86 (2.90)

  Without income

1092 (97.50)

3024.22 (532.53)

48.41 (2.64)

41.30 (2.56)

SES (Item)

  > 4

628 (56.07)

3028.14 (538.14)

48.64 (2.52)

41.46 (2.60)

  ≤ 4

492 (43.93)

3017.10 (519.03)

48.12 (2.74)

41.07 (2.52)

Household Monthly expenditure (US$)

  ≤ 41.00

639 (57.05)

3026.04 (522.58)

48.24 (2.63)

41.30 (2.61)

  41.00–83.99

220 (19.64)

2992.59 (514.07)

48.64 (2.50)

41.48 (2.51)

  84.00–166.99

215 (19.20)

3044.81 (577.72)

48.63 (2.73)

41.07 (2.47)

  > 167.00

46 (4.11)

3031.30 (472.18)

48.79 (2.69)

41.18 (2.73)

Family size

  ≤ 4

1005 (89.73)

3017.02 (537.95)

48.60 (2.52)

41.40 (2.58)

  > 4

115 (10.27)

3078.08 (448.68)

48.10 (2.74)*

41.07 (2.53)*

Pregnancy characteristics

Receiving prenatal care from Healthcare centers

  Regular

391 (34.91)

3028.63 (524.22)

48.47 (2.36)

41.19 (2.53)

  Irregular

717 (64)

3018.02 (534.38)

48.37 (2.79)

41.34 (2.60)

  Not received

12 (1.07)

3164.16 (423.24)

48.70 (1.25)

41.09 (1.77)

Maternal Self-rated health

  Poor/very poor

10 (0.89)

3400.00 (507.71)

47.95 (3.93)

40.52 (2.80)

  Medium

77 (6.88)

2978.83 (603.31)

48.27 (2.67)

41.26 (2.43)

  good /excellent

1033 (92.23)

3022.96 (523.04)*

48.43 (2.62)

41.30 (2.58)

Anemia during pregnancy

  Yes

311 (27.77)

3020.87 (487.68)

48.46 (2.37)

41.29 (2.46)

  No

809 (72.23)

3024.22 (545.17)

48.39 (2.73)

41.29 (2.61)

Delivery type

  Vaginal

647 (57.77)

3038.44 (472.93)

48.57 (2.48)

41.34 (2.61)

  Cesarean

473 (42.23)

3002.56 (598.45)

48.20 (2.82)*

41.22 (2.52)

Infant sex

  Boy

568 (50.71)

3100.70 (540.63)

48.63 (2.76)

41.47 (2.68)

  Girl

552 (49.29)

2943.64 (506.32)*

48.18 (2.48)

41.10 (2.44)

Preterm delivery

  Yes

70 (6.25)

2233.35 (780.19)

45.37 (4.81)

41.12 (3.26)

  No

1050 (93.75)

3067.34 (465.62)*

48.62 (2.28)

41.30 (2.52)

Water pipe smoking

  Never smoker

969 (86.52)

3035.18 (527.08)

48.48 (2.62)

41.24 (2.57)

  Quitter

89 (7.95)

2914.12 (510.89)

47.96 (2.51)

41.35 (2.64)

  Always Smoker

62 (5.54)

2848.30 (574.78)

48.00 (2.90)

41.96 (2.50)

Second-hand tobacco smoking

  Yes

183 (16.40)

3042.30 (502.80)

48.30 (2.85)

41.27 (2.35)

  No

937 (83.60)

3009.90 (535.90)

48.40 (2.59)

41.29 (2.61)