Table 3. Measurement of vaginal squeeze pressure by perineometer at 6 weeks postpartum and manual assessment of pelvic floor strength on a pelvic exam by palpation (Oxford scale).

Characteristics	Control group (n=26)	Treatment group (n=27)	Risk ratio (95% confidence interval)	P-value
Vaginal squeeze pressure (cm H2O)	21±17	22±13	N/A	NS
Oxford scale	3 (1–5)	3 (1–4)	N/A	NS
Weak vaginal squeeze pressure (≤17 cm H2O; %)	58	28	0.48 (0.23–0.98)	0.03

Values are presented as mean±standard deviation or median (range).

NS, not significant; N/A, not applicable.