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Table 1 Characteristics in early pregnancy of the women included in the study

From: Finger joint laxity, number of previous pregnancies and pregnancy induced back pain in a cohort study

Characteristic

n

Mean (S.D.) or proportion (%)

Age (yr)

195

27.8 (4.6)

Weight (kg)

188

63.7 (8.7)

Height (m)

187

1.66 (0.06)

Body mass index (kg/m2)

187

23.0 (2.9)

No cigarette smoking (%)

151/195

77

Pregnant for the first time (%)

79/194

41

Nulliparous (%)

116/194

60

Number of previous pregnancies

194

0.9 (0.9)

Number of previous deliveries

194

0.5 (0.7)

Time since previous delivery (yr)

78

3.3 (0.4)

Previous back pain, not during pregnancy (%)

113/195

58

Back pain in previous pregnancy (%)

46/115

40