Table 3. Participant demographics.

Metric	IP4IC			P3
	UIC	NUIC	Controls	UIC	NUIC	Controls
	(n = 54)	(n = 99)	(n = 295)	(n = 8)	(n = 17)	(n = 26)
Age (years)	54.4 ±1.7	50.8±0.3	50.5±0.8	61.1±5.1	62.9±3.3	56.6±3.6
Duration of symptoms (mos)	185±13.7	120.1±9.2	n/a	167.4±33.2	236.2±42.2	n/a
IC symptom index (0–20)	14.8±0.6	11.5±0.5	3.0±0.2	14.9±1.3	12.7±0.6	2.0±0.4
IC problem index (0–16)	12.2±0.5	9.8±0.4	1.5±0.1	12.9±1.2	11.5±0.5	1.5±0.9
# AM voids	8.4±0.9	5.5±3.9	2.8±1.3	No voiding diary collected
# PM voids	10.2±1.3	7.3±4.8	3.8±1.9
Total /24 h	18.6±2.1	12.8±8.3	6.7±2.8
Leakage #	1.8±0.9	0.9±2.8	0.0±0.6
Pain #	9.4±2.4	3.9±7.6	0.0±0.3
Avg. AM Pain	5.1±0.4	3.7±2.9	0.1±0.5
Avg. PM Pain	5.5±0.4	4.0±2.9	0.1±0.7
Avg. AM Urgency	6.7±0.4	4.3±3.0	1.4±20.5
Avg. PM Urgency	6.7±0.4	4.3±3.0	1.1±1.8