Validity of the self-reported five-part questionnaire as an assessment of generalized joint hypermobility in early pregnancy

Table 1 Sociodemographic characteristic of 339 women in early pregnancy

Variable		Missing
Age, mean in years (SD)	31.0 (4.4)
Completed weeks of gestation, mean^a (SD)	12.2 (2.2)	4
BMI, mean (SD)	24.7 (4.4)	6
Married/cohabiting (%)	94.4	4
Completed University education (%)	67.6	4
Place of birth (%)
- Sweden	86.1	6
No previous pregnancies (%)	37.8	3
No previous deliveries (%)	51.6	3
Non-smokers (%)	97.9	3
Beighton score ≥ 5 (%)	15.9	6
Self-reported 5PQ ≥ 2 (%)	40.4	33
Clinical assessment after answering 5PQ (%)	64.3	2

SD Standard deviation
^aEstimated after ultrasound
BMI Body mass index. The body-mass index is the weight in kilograms divided by the square of the height in meters
5PQ Five-part questionnaire. Each positive response adds 1 point, with a total score ranging from 0 to 5
1. Can you now (or could you ever) place your hands flat on the floor without bending your knees?
2.Can you now (or could you ever) bend your thumb to touch your forearm?
3. As a child, did you amuse your friends by contorting your body into strange shapes or could you do the splits?
4. As a child or teenager, did you dislocate your shoulder or kneecap on more than one occasion?
5. Do you consider yourself double-jointed?
BeS Beighton. A positive result in any assessment adds 1 point, with a total score ranging from 0 to 9
1. Passive dorsiflexion of the fifth metacarpophalangeal joint ≥90 degrees
2. Passive apposition of the thumb to the flexor aspects of the forearm
3. Passive hyperextensions of the elbow ≥10 degrees
4. Passive hyperextensions of the knee ≥10 degrees
5. Forward flexion of the trunk with knees straight, with the palms of the hands rested on the floor

ISSN: 1471-2474