Practice set: movement, sleep and evidence quality

P4. How many reviews did Singh and colleagues (2023) include?

• 97
• 148
• 50
• 27

P5. Insomnia and later depression: the pooled odds ratio summarised in this module is:

• 2.1
• 1.5
• 0.43
• 1.26

P6. Seventy-seven of 97 reviews were rated critically low. What follows?

• Confidence in the exact size should be lower
• The effect is zero
• The reviews are proof
• Nothing

P7. Time outdoors, in this course, is graded:

• Untested here
• Strong
• Moderate
• Harmful