Table 1.
Country | Survey1 | Sample Characteristics2 | Field Dates | Age Range | Sample Size | Response Rate | ||
---|---|---|---|---|---|---|---|---|
Part I | Part II | Part II and Age ≤ 444 | ||||||
Belgium | ESEMeD | Stratified multistage clustered probability sample of individuals residing in households from the national register of Belgium residents. NR | 2001–2 | 18+ | 2419 | 1043 | 486 | 50.6 |
Colombia | NSMH | Stratified multistage clustered area probability sample of household residents in all urban areas of the country (approximately 73% of the total national population) | 2003 | 18–65 | 4426 | 2381 | 1731 | 87.7 |
France | ESEMeD | Stratified multistage clustered sample of working telephone numbers merged with a reverse directory (for listed numbers). Initial recruitment was by telephone, with supplemental in-person recruitment in households with listed numbers. NR | 2001–2 | 18+ | 2894 | 1436 | 727 | 45.9 |
Germany | ESEMeD | Stratified multistage clustered probability sample of individuals from community resident registries. NR | 2002–3 | 18+ | 3555 | 1323 | 621 | 57.8 |
Italy | ESEMeD | Stratified multistage clustered probability sample of individuals from municipality resident registries. NR | 2001–2 | 18+ | 4712 | 1779 | 853 | 71.3 |
Israel | NHS | Stratified multistage clustered area probability sample from national register of Israeli residents. NR | 2002–4 | 21+ | 4859 | -- | -- | 72.6 |
Japan | WMHJ2002-2003 | Un-clustered two-stage probability sample of individuals residing in households in four metropolitan areas (Fukiage, Kushikino, Nagasaki, Okayama) | 2002–3 | 20+ | 2436 | 887 | 282 | 56.4 |
Lebanon | LEBANON | Stratified multistage clustered area probability sample of household residents. NR | 2002–3 | 18+ | 2857 | 1031 | 595 | 70.0 |
Mexico | M-NCS | Stratified multistage clustered area probability sample of household residents in all urban areas of the country (approximately 75% of the total national population). | 2001–2 | 18–65 | 5782 | 2362 | 1736 | 76.6 |
Netherlands | ESEMeD | Stratified multistage clustered probability sample of individuals residing in households that are listed in municipal postal registries. NR | 2002–3 | 18+ | 2372 | 1094 | 516 | 56.4 |
New Zealand | NZMHS | Stratified multistage clustered area probability sample of household residents. NR | 2004–5 | 16+ | 12992 | 7435 | 4242 | 73.3 |
Nigeria | NSMHW | Stratified multistage clustered area probability sample of households in 21 of the36 states in the country, representing 57% of the national population. The surveys were conducted in Yoruba, Igbo, Hausa and Efik languages. | 2002–3 | 18+ | 6752 | 2143 | 1203 | 79.3 |
PRC5 Beijing | B-WMH | Stratified multistage clustered area probability sample of household residents in the Beijing metropolitan area. | 2002–3 | 18+ | 2633 | 914 | 307 | 74.8 |
PRC5 Shanghai | S-WMH | Stratified multistage clustered area probability sample of household residents in the Shanghai metropolitan area. | 2002–3 | 18+ | 2568 | 714 | 263 | 74.6 |
South Africa | SASH | Stratified multistage clustered area probability sample of household residents. NR | 2003–4 | 18+ | 4315 | -- | -- | 87.1 |
Spain | ESEMeD | Stratified multistage clustered area probability sample of household residents. NR | 2001–2 | 18+ | 5473 | 2121 | 960 | 78.6 |
Ukraine | CMDPSD | Stratified multistage clustered area probability sample of household residents. NR | 2002 | 18+ | 4725 | 1720 | 541 | 78.3 |
United States | NCS-R | Stratified multistage clustered area probability sample of household residents. NR | 2002–3 | 18+ | 9282 | 5692 | 3197 | 70.9 |
ESEMeD (The European Study Of The Epidemiology Of Mental Disorders); NSMH (The Colombian National Study of Mental Health); NHS (Israel National Health Survey); WMHJ2002-2003 (World Mental Health Japan Survey); LEBANON (Lebanese Evaluation of the Burden of Ailments and Needs of the Nation); M-NCS (The Mexico National Comorbidity Survey); NZMHS (New Zealand Mental Health Survey); NSMHW (The Nigerian Survey of Mental Health and Wellbeing); B-WMH (The Beijing World Mental Health survey); S-WMH (The Shanghai World Mental Health Survey); SASH (South Africa Health Survey); CMDPSD (Comorbid Mental Disorders during Periods of Social Disruption); NCS-R (The US National Comorbidity Survey Replication).
Most WMH surveys are based on stratified multistage clustered area probability household samples in which samples of areas equivalent to counties or municipalities in the US were selected in the first stage followed by one or more subsequent stages of geographic sampling (e.g., towns within counties, blocks within towns, households within blocks) to arrive at a sample of households, in each of which a listing of household members was created and one or two people were selected from this listing to be interviewed. No substitution was allowed when the originally sampled household resident could not be interviewed. These household samples were selected from Census area data in all countries other than France (where telephone directories were used to select households) and the Netherlands (where postal registries were used to select households). Several WMH surveys (Belgium, Germany, Italy) used municipal resident registries to select respondents without listing households. The Japanese sample is the only totally un-clustered sample, with households randomly selected in each of the four sample areas and one random respondent selected in each sample household. Nine of the 15 surveys are based on nationally representative (NR) household samples, while two others are based on nationally representative household samples in urbanized areas (Colombia, Mexico).
The response rate is calculated as the ratio of the number of households in which an interview was completed to the number of households originally sampled, excluding from the denominator households known not to be eligible either because of being vacant at the time of initial contact or because the residents were unable to speak the designated languages of the survey.
All countries, with the exception of Nigeria, PRC Beijing, PRC Shanghai, and Ukraine (which were age restricted to ≤ 39) were age restricted to ≤ 44.
People’s Republic of China