Table 3.

SF-36 subscales and summary scores

SF-36 subscales	Time lapse				Day 42 - Baseline
	Baseline		Day 42		EDA	ITM	EDA vs ITM
	EDA	ITM	EDA	ITM	P value*	P value*	P value†
Physical functioning	85 (63–95)	80 (65–95)	80 (65–95)	83 (68–90)	0.91	0.95	0.69
Role physical	38 (0–100)	63 (0–100)	0 (0–13)	0 (0–0)	<0.001	<0.0001	0.16
Bodily pain	51 (37–100)	62 (47–84)	58 (42–74)	74 (52–84)	0.96	0.92	0.95
General health	75 (57–85)	72 (55–81)	70(47–87)	72 (59–81)	0.10	0.65	0.10
Vitality	53 (40–75)	53 (43–70)	45 (33–68)	55 (43–70)	0.08	0.90	0.20
Social functioning	75 (50–100)	75 (56–81)	75 (50–88)	75 (50–75)	0.15	0.70	0.09
Role emotional	100 (0–100)	100 (0–100)	83 (0–100)	100 (33–100)	0.65	0.25	0.30
Mental health	76 (60–84)	70 (60–80)	78 (66–84)	80 (66–86)	0.54	<0.01	0.13
Physical component summary score	44 (34–53)	45 (34–53)	39 (3444)	38 (35–42)	0.03	<0.01	0.41
Mental component summary score	46 (35–52)	46 (35–51)	49 (34–53)	51 (39–55)	0.69	0.01	0.05

A high score represents a better health-related quality of life.

Figures indicate median (IQR).

No significant differences were observed in the subscales between the two groups at baseline (Mann-Whitney U-test).

*Wilcoxon matched pair tests.

†Mann-Whitney U test.

EDA, epidural analgesia; ITM, intrathecal morphine analgesia; SF-36, Short Form–36 Health Survey.