Table 4.

Health status, BMI, long-term conditions and health anxiety in 71 persistent FAs and 71 NAs

Variable	FA	NA	P value	Odds ratio (95% CI)
EQ-5D-3L
Index value: median (IQR)	0.66 (0.19–0.80)	1.00 (0.80–1.00)	<0.001 a	N/A
VAS score: median (IQR)	50 (40–65)	85 (70–95)	<0.001 a	N/A
Dimensions b	L1 | L2 | L3	L1 | L2 | L3
Mobility	30 | 41 | 0	56 | 15 | 0	<0.001 a	N/A
Self-care	51 | 20 | 0	69 | 1 | 1	<0.001 a	N/A
Usual activities	29 | 34 | 8	62 | 7 | 2	<0.001 a	N/A
Pain/discomfort	11 | 41 | 19	48 | 20 | 3	<0.001 a	N/A
Anxiety/depression	31 | 34 | 6	61 | 8 | 2	<0.001 a	N/A
HAI
Score of items 1–14: mean (95% CI)	18.5 (15.9–21.2)	6.6 (5.3–7.8)	<0.001 c	N/A
Reassurance seeking: mean (95% CI)	25.0 (20.9–29.1)	14.0 (10.5–1765)	<0.001 c	N/A
Avoidance: median (IQR)	6.0 (0–17)	0 (0–4)	0.0024 a	N/A
BMI: median (IQR)	30.1 (25.7–31.6)	26.2 (24.6–28.8)	0.020 a	N/A
Long-term conditions d : median (range)	3 (0–8)	1 (0–5)	<0.001 a	N/A
Hypertension e , n (%)	29 (48)	14 (23)	0.002	4.8 (1.6–19.2)
Painful condition e , n (%)	22 (37)	7 (12)	0.004	3.5 (1.4–10.6)
Asthma (currently treated) e , n (%)	17 (28)	7 (12)	0.033	2.7 (1.0–8.3)
Irritable bowel syndrome e , n (%)	16 (27)	7 (12)	0.020	4.0 (1.1–22.1)
Diabetes e , n (%)	9 (15)	2 (3)	0.012	8.0 (1.1–355.0)

CI, confidence interval.

^a Wilcoxon signed-rank tests for EQ-5D dimensions, index value and VAS, Health Anxiety Inventory (HAI) avoidance scores, BMI and long-term conditions.

^b Number of participants reporting level 1 (L1; no problems), level 2 (L2; some problems) and level 3 (L3; extreme problems) for each dimension.

^c Paired t -tests for HAI item 1–14 scores and reassurance seeking scores.

^d Long-term physical conditions from case records as defined by Barnett et al. (22), n = 60 in both FAs and NAs.

^e Long-term conditions if found in 10% or more participants in either group, McNemar’s test for all binary long-term conditions.