. 2020 Mar 13;8(3):e16415. doi: 10.2196/16415

Table 3.

Findings in the PainCoach group, active PainCoach subgroup, and control group during the first 2 weeks at home.

Variable		1. PainCoach versus control	2. Active PainCoach versus control	P value (1)	P value (2)
VAS^a pain, decrease or increase (rate)
	Knee at rest	↓0.3	↓1.9	.86	.27
	Knee during activity	↓1.0	↓4.1	.48	.02^b
	Knee at night	↓3.0	↓6.3	.06^c	<.001^b
Medication use, decrease or increase (%)
	Opiate	↓23.2	↓44.3	.02^b	<.001^b
	NSAIDs^d	↓9.2	↓12.8	.08^c	.06^c
	Acetaminophen	↑14.6	↑21.0	<.001^b	<.001^b
	Gabapentin	↑4.6	↓76.3	.71	<.001^b
Acceptable pain, decrease or increase (%)
	Knee at rest	↓31.3	↓20.3	.11	.25
	Knee during activity	↓17.2	↑31.1	.40	.38
	Knee at night	↓21.1	↑36.4	.21	.25
Experience with the executed recommended exercises—exactly enough, decrease or increase (%)		↓33.1	↓8.7	.02^b	.67

^aVAS: visual analog scale.

^bSignificant difference (P<.05).

^cTrend (.05<P<.10).

^dNSAIDs: nonsteroidal anti-inflammatory drugs.