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Femoroacetabular impingement:

J¨®nasson et al (2014) & Thomee et al (2014) 
502 Swedish men and women age 15-75 (average age 37) with femoroacetabular impingement.

• Average SEM of iHOT12 was 6.2

Hip arthroscopic surgery for intra-articular hip lesion:

Kemp (2013)

Age 16-80 who underwent hip arthroscopic surgery for intra-articular hip lesion performed by one specific orthopedic surgeon in past 12-24 months.

• Total score was 6 points

A variety of symptomatic hip conditions:

Mohtadi (2012)

Young, active patients (aged 18 to 60 years, Tegner activity level > 4) presenting with a variety of symptomatic hip conditions.

• Total score was 3 points (95% confidence interval, 5.5 to 6.8)

Femoroacetabular impingement:

J¨®nasson et al (2014) 

502 Swedish men and women age 15-75 (average age 37) with femoroacetabular impingement.

• 90% MDC = 14.4

Hip arthroscopic surgery for intra-articular hip lesion:

Kemp (2013) 

Total score was 6 points

• 90% MDC = 13.9 
• 95% MDC = 16.6 
• 16 (patients); 2 (control group)

A variety of symptomatic hip conditions:

Mohtadi (2012) 

Total score was 3 points (95% confidence interval, 5.5 to 6.8)

• 90% MDC = 7.0

Femoroacetabular impingement:

J¨®nasson et al (2014) 

502 Swedish men and women age 15-75 (average age 37) with femoroacetabular impingement.

• ¡°MIC of 9 to 16 for the individual items and 9 for the average iHOT12-S score at baseline and a 4-month follow-up.¡±

Hip arthroscopic surgery for intra-articular hip lesion:

Kemp (2013) 

Age 16-80 who underwent hip arthroscopic surgery for intra-articular hip lesion performed by one specific orthopedic surgeon in past 12-24 months.

• The MCID was found to be 10 (of 100 points total) 

A variety of symptomatic hip conditions:

Mohtadi (2012) 

Young, active patients (aged 18 to 60 years, Tegner activity level > 4) presenting with a variety of symptomatic hip conditions.

• The MCID was calculated to be 6.1 showing that the iHOT-33 is very sensitive to change.

Griffin (2012) 

Adults (18-60 years) who came as new pts to a hip clinic for young adults or who were participating in a follow-up after a hip-preserving treatment for diagnoses including, but not limited to: chondral defects, trauma, FAI, labral tears, early OA, instability, loose bodies, Perthes disease, AVN, SCFE, and dysplasia, were used to develop this new (shortened) outcome measure.

• N = 1,833. Mean iHOT-33 score = 44.3 (95% CI 43.1-45.5)

Femoroacetabular impingement:

J¨®nasson et al (2014) 

502 Swedish men and women age 15-75 (average age 37) with femoroacetabular impingement.

• Mean:39.3 (Baseline), 39.9 (4 months) 
• Standard Deviation:17.7(Baseline), 17.4 (4 months)

Hip arthroscopic surgery for intra-articular hip lesion:

Kemp (2013) 

Age 16-80 who underwent hip arthroscopic surgery for intra-articular hip lesion performed by one specific orthopedic surgeon in past 12-24 months.

• Hip arthroscopic surgery group: 72 ¡À 20.1 
• Control group: 97 ¡À 5.9 

A variety of symptomatic hip conditions:

Mohtadi (2012) 

Young, active patients (aged 18 to 60 years, Tegner activity level > 4) presenting with a variety of symptomatic hip conditions.

• The mean score was 32 of 100 at baseline and 65 of 100 at 6 months.

Griffin (2012) 

Adults (18-60 years) who came as new pts to a hip clinic for young adults or who were participating in a follow-up after a hip-preserving treatment for diagnoses including, but not limited to: chondral defects, trauma, FAI, labral tears, early OA, instability, loose bodies, Perthes disease, AVN, SCFE, and dysplasia, were used to develop this new (shortened) outcome measure.

• Excellent test-retest reliability (ICC=0.89 for the iHOT-12). Data from administering additional iHOT-33 to population (n=104) a mean of 24 days after first assessment was used to calculate ICC. 

Femoroacetabular impingement:

J¨®nasson et al (2014) 

502 Swedish men and women age 15-75 (average age 37) with femoroacetabular impingement.

• Excellent test-retest reliability (ICC=0.88). "The ICC ranged from 0.59 to 0.93 for the iHOT12-S individual items, with an ICC of 0.88 for the average iHOT12-S score. Wilcoxon¡¯s paired test revealed no statistically significant difference between the test and retest scores.¡±

Hip arthroscopic surgery for intra-articular hip lesion:

Kemp (2013) 

Age 16-80 who underwent hip arthroscopic surgery for intra-articular hip lesion performed by one specific orthopedic surgeon in past 12-24 months.

• Excellent test-retest reliability (ICC=0.93 [0.87-0.96] with 95% confidence interval)

A variety of symptomatic hip conditions:

Mohtadi (2012) 

Young, active patients (aged 18 to 60 years, Tegner activity level > 4) presenting with a variety of symptomatic hip conditions.

• Excellent, all questions have a Pearson correlation of greater than 0.80

Femoroacetabular impingement:

J¨®nasson et al (2014) 

502 Swedish men and women age 15-75 (average age 37) with femoroacetabular impingement.

• Excellent, iHOT12-S (Cronbach¡¯s alpha = 0.89)

Hip arthroscopic surgery for intra-articular hip lesion:

Kemp (2013) 

Age 16-80 who underwent hip arthroscopic surgery for intra-articular hip lesion performed by one specific orthopedic surgeon in past 12-24 months.

• Excellent (Cronbach¡¯s alpha = 0.96)

A variety of symptomatic hip conditions:

Mohtadi (2012) 

Young, active patients (aged 18 to 60 years, Tegner activity level > 4) presenting with a variety of symptomatic hip conditions.

• Excellent (Cronbach¡¯s alpha = .99)

Griffin (2012) 

Adults (18-60 years) who came as new pts to a hip clinic for young adults or who were participating in a follow-up after a hip-preserving treatment for diagnoses including, but not limited to: chondral defects, trauma, FAI, labral tears, early OA, instability, loose bodies, Perthes disease, AVN, SCFE, and dysplasia, were used to develop this new (shortened) outcome measure.

• Excellent: r=.979 (derived from regression indicating that iHOT-12 accounted for 95.9% of the variation of the iHOT-33)

Femoroacetabular impingement:

J¨®nasson et al (2014) 

502 Swedish men and women age 15-75 (average age 37) with femoroacetabular impingement.

• Spearman¡¯s correlation coefficients were calculated at baseline between the iHOT12-S and EQ5D and the iHOT12-S and HAGOS-S. There were significant correlations with all the subscales of the HAGOS-S, the EQ-5D total score and the EQ-5D VAS score. Correlations between the iHOT12-S and EQ-5D were good for the mobility, usual activities and pain/discomfort subscales. Interestingly, there was a higher correlation than expected with the anxiety/depression subscale (Spearman r = 0.34), indicating a larger psychological factor than hypothesized. The physical activity subscale of the HAGOS was lower than hypothesized.

Hip arthroscopic surgery for intra-articular hip lesion:

Kemp (2013) 

Age 16-80 who underwent hip arthroscopic surgery for intra-articular hip lesion performed by one specific orthopedic surgeon in past 12-24 months.

• SF-36 Subscales
  • Excellent, Physical Functioning: r = .751
  • Adequate, Physical Role: r = .552
  • Adequate, Bodily Pain: r = .529
  • Adequate, General Health: r = .439
  • Adequate, Vitality: r = .432
  • Adequate, Social Functioning: r = .498
  • Adequate, Emotional Role: r = .319
  • Poor, Mental Health: r = .256
• Hip arthroscopic surgery group: 72 ¡À 20.1
• Control group: 97 ¡À 5.9
• Shows this test has discriminative ability.

A variety of symptomatic hip conditions:

Mohtadi (2012) 

Young, active patients (aged 18 to 60 years, Tegner activity level > 4) presenting with a variety of symptomatic hip conditions.

• Excellent correlation with NAHS (r= 0.81)

Thomee et al (2014) 

• Spearman¡¯s correlation coefficients of the Swedish iHOT 12-S with the HAGOS-S: 
  Adequate, Symptoms: r=.58
  Excellent, Pain: r=.65
  Excellent, Functional in Daily Living: r=.68
  Excellent, Function in Sport and Recreation: r= .67
  Adequate, Participation in Physical Activities: r=.37
  Excellent, Quality of Life (Hip and/or Groin-related): r=.61
  Per Thomee et al., the correlations are all significant.

Mohtadi, 2012) 

Young, active patients (aged 18 to 60 years, Tegner activity level > 4) presenting with a variety of symptomatic hip conditions.

Content validity was assessed through consensus agreement with a group of participating orthopaedic hip arthroscopists. This group, the MAHORN, provided input at all stages of the development of the questionnaire. Members of the Multicenter Arthroscopy of the Hip Outcomes Research Network (MAHORN) provided feedback into the original set of items and rated each of the items with respect to importance in a similar fashion to the patients in the item reduction phase. The surgeons also evaluated each item in the pretest questionnaire for its relevance, whether the item would change as a result of treatment, and whether the response format was appropriate.

Ten additional items were included based on consensus agreement between the research team and the MAHORN surgeons.

Content validity was not further tested on patients with and without the condition.

Femoroacetabular impingement:

(J¨®nasson et. al., 2014) 

502 Swedish men and women age 15-75 (average age 37) with femoroacetabular impingement.

Face validity of iHOT12-S was deemed acceptable, according to consensus among the expert panel.

 A variety of symptomatic hip conditions:(Mohtadi, 2012) 

Young, active patients (aged 18 to 60 years, Tegner activity level > 4) presenting with a variety of symptomatic hip conditions.

Patients were involved in the development of the tool to establish face validity of the tool. Face validity was determined throughout the development of the questionnaire by reviewing the relevant literature, as well as through the direct involvement and contribution from representative samples of patients with hip problems, orthopaedic hip surgeons, and physiotherapists.

Femoroacetabular impingement:

J¨®nasson et al (2014) 

502 Swedish men and women age 15-75 (average age 37) with femoroacetabular impingement.

Excellent, floor and ceiling effects were not detected in the iHOT12-S.

Hip arthroscopic surgery for intra-articular hip lesion:

Kemp (2013) 

Age 16-80 who underwent hip arthroscopic surgery for intra-articular hip lesion performed by one specific orthopedic surgeon in past 12-24 months.

Excellent, no floor or ceiling effect detected.

A variety of symptomatic hip conditions:

Mohtadi (2012) 

Young, active patients (aged 18 to 60 years, Tegner activity level > 4) presenting with a variety of symptomatic hip conditions.

Excellent, no floor or ceiling effect detected.

Griffin (2012) 

Adults (18-60 years) who came as new pts to a hip clinic for young adults or who were participating in a follow-up after a hip-preserving treatment for diagnoses including, but not limited to: chondral defects, trauma, FAI, labral tears, early OA, instability, loose bodies, Perthes disease, AVN, SCFE, and dysplasia, were used to develop this new (shortened) outcome measure.

Determined using standardized effect size: 

• Large responsiveness, 0.98 (95% CI, 0.67-1.28) for iHOT-12
• Large responsiveness, 1.03 (95% CI, 0.70-1.36) for iHOT-33

Femoroacetabular impingement:

J¨®nasson et al (2014)

502 Swedish men and women age 15-75 (average age 37) with femoroacetabular impingement.

 
¡°The changes in the GPE score between baseline and the 4-month follow-up were in agreement with the SRM and ES results, indicating good responsiveness by the iHOT12-S.¡± 

Hip arthroscopic surgery for intra-articular hip lesion:

Kemp (2013)

Age 16-80 who underwent hip arthroscopic surgery for intra-articular hip lesion performed by one specific orthopedic surgeon in past 12-24 months.

Correlation with Global Rating of Change (GRC): r =0 .57; p < 0.001. Moderate responsiveness, effect Size = 0.22. Relationship considered if r > 0.40 and significance if p < .05. 

 A variety of symptomatic hip conditions:

Mohtadi (2012) 

Young, active patients (aged 18 to 60 years, Tegner activity level > 4) presenting with a variety of symptomatic hip conditions.

The mean change in score was 33 with a SD of 19.3. Responsiveness was determined using several different measures, including a comparison of baseline and 6-month data with a paired t test, standardized effect size, standardized response mean, and responsiveness ratio. 
For the comparison of baseline and 6-month data, the paired t test showed highly significant differences, with p < .01. The standardized mean response was 1.7, standardized effect size is 2.0--Large responsiveness, responsiveness ratio was 6.7.