Table II.

Number and percentage of HON-accredited websites.

Category/search term	Total websites returned	HON accredited (600 per term)				p-value^*
Category/search term	Total websites returned	HONcode+^†	HONcode-^‡	Total	HONcode, %^§	p-value^*
Condition
Arthritis	109,000,000	97	503	600	16
Osteoarthritis	16,900,000	121	479	600	20
End-stage arthritis	43,700,000	56	544	600	9
Bone on bone arthritis	118,000,000	96	504	600	16
Total	76,350,000^¶	370^**	2,030^**	2,400^**	16^¶	< 0.001
Arthroplasty
Total joint arthroplasty	6,070,000	71	519	600	12
Total joint replacement	146,000,000	81	519	600	14
Total	76,035,000^¶	152^**	1,048^**	1,200^**	13^¶	0.385
Hip
Total hip arthroplasty	5,240,000	72	528	600	12
Total hip replacement	70,000,000	60	540	600	10
Total	37,620,000^¶	132^**	1,068^**	1,200^**	11^¶	0.268
Knee
Total knee arthroplasty	6,460,000	79	521	600	13
Total knee replacement	110,000,000	71	529	600	12
Total	58,230,000^¶	150^**	1,050^**	1,200^**	13^¶	0.485
Approach
Anterior hip replacement	9,280,000	32	568	600	5
Posterior hip replacement	6,200,000	46	554	600	8
Total	7,740,000^¶	78^**	1,122^**	1,200^**	7^¶	0.101
Unicompartmental knee
Half knee replacement	31,100,000	48	552	600	8
Unicompartmental knee replacement	240,000	38	562	600	6
Mako knee	2,370,000	14	571	600	2
Oxford knee replacement	117,000,000	29	571	600	5
Total	16,735,000^¶	129^**	2,271^**	2400^**	6^¶	< 0.001
Recovery
Total hip replacement recovery time	15,100,000	76	524	600	13
Total knee replacement recovery time	15,200,000	77	523	600	13
Total	30,300,000^¶	153^**	1,047^**	1,200^**	13^¶	0.931
Overall total	30,300,000^¶	1,011^**	8,589^**	10,800^**	12^¶	< 0.001

Pearson chi-squared test, with < 0.05 indicating significant number of HON-accredited websites returned during a search.

^†

HON-accredited website.

^‡

Not HON-accredited website.

^§

Percentage of HON-accredited websites, calculated by HONcode+ divided by the total websites ((HONcode+) + (HONcode-))

^¶

Median.

^**

Sum.