Content and coding of variables in social support and strain

Scale	Questionnaire items
Family/friend support	How much do {members of your family/your friends} really care about you? How much do they understand the way you feel about things? How much can you rely on them if you have a serious problem? How much can you open up to them if you need to talk about your worries?
Family/friend strain	How often do {members of your family/your friends} make too many demands on you? How often do they criticize you? How often do they let you down when you are counting on them? How often do they get on your nerves?
Spouse support	How much does your spouse or partner really care about you? How much does he or she understand the way you feel about things? How much does he or she appreciate you? How much do you rely on him or her for help if you have a serious problem? How much can you open up to him or her if you need to talk about your worries? How much can you relax and be yourself around him or her?
Spouse strain	How often does your spouse or partner make too many demands on you? How often does he or she argue with you? How often does he or she make you feel tense? How often does he or she criticize you? How often does he or she let you down when you are counting on him or her? How often does he or she get on your nerves?

Coding for each item: 1 = a lot; 2 = some; 3 = a little; 4 = not at all.

Coding for each scale: Mean of all items across waves 1 and 2. Recoded so higher scores reflect higher support or strain.