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GAIN By The Numbers

As of January 6, 2025

Current GAIN Users

  • States/Provinces/Territories using the GAIN: 65 (updated June 17, 2024)
  • Countries where the GAIN is used: 17 (Australia, Belgium, Brazil, Canada, China, Great Britain, India, Iran, Japan, Malaysia, Mexico, Pakistan, South Africa, South Korea, Spain,  Portugal, US) (updated June 17, 2024)
  • Licensed GAIN administrative units: 5,676 (updated June 17, 2024)
  • Certified GAIN Local Trainers (individuals that completed our train the trainer model and can now train and recommend their staff to Chestnut for certification): 1,792 (updated June 17, 2024)
  • Certified GAIN Administrators (individuals from all 50 states and four countries outside the united states have completed certification to administer the GAIN at their agencies; these individuals recorded their GAIN administrations with clients and received feedback and coaching from Chestnut to demonstrate mastery of administration): 3,277 (updated June 17, 2024)
  • Certified GAIN Site Interviewers (individuals who were trained by a local trainer at their own agency): 6,379 (updated June 17, 2024)

GAIN Publications and National Dataset

  • GAIN-related publications: 942 (updated December 30, 2024)
  • GAIN-I related publications: 401 (updated December 30, 2024)
  • GAIN Quick related publications: 65 (updated December 30, 2024)
  • GAIN Short Screener related publications: 327 (updated December 30, 2024)
  • Sample size in GAIN 2023 data set: 754,464 (data through December 31, 2023)
  • Sample size in 2018 GAIN Norms: 306,608 (data through August 31, 2018)

GAIN ABS users

  • Total GAIN ABS agency accounts: 1,700
  • Total GAIN ABS users: 22,280
  • Total records in GAIN ABS: 1,264,775
    • GAIN-I 5.7: 191,519
    • GAIN-M90 5.7: 10,831
    • GAIN-I 5.6: 260,604
    • GAIN-M90 5.6: 56,476
    • GAIN-Q4: 1,096
    • GAIN-Q3: 91,447
    • GAIN-Q3 FU: 10,333
    • GAIN-Q2: 191,638
    • GAIN-Q2 FU: 5,433
    • GAIN-SS2: 38,363
    • GAIN-SS3: 307,634
    • GAIN-SS4: 45,006
    • TxSI: 18,668
    • Research Specific: 31,017